Top 100 Outsourced Medical Billing Firms for Private Practices & Clinics (2025 Complete Buyer’s Guide)

If your in-house team is drowning in edits, A/R backlogs, and payer policy churn, this 2025 buyer’s guide gives you a true outsourcing map—from boutique specialty coders to enterprise RCM partners. Before shortlisting vendors, tighten your claims submission SOP and document exactly where CARCs hit your pipeline; that’s how you test a firm’s impact on first-pass yield and days in A/R (claim steps, CARC decoding). Ask for pilots on telemedicine coding, payment posting exceptions, and denial prevention workflows (telehealth rules, posting playbook, denials blueprint). Lock your HIPAA/BAA posture and internal ethical billing guidelines before go-live (HIPAA guardrails, ethics baseline).

How to shortlist RCM partners (and avoid expensive mismatches)

Score vendors against five proof points: (1) Denials prevention by top payer and service line; (2) coding audit pass rates with documentation corrections; (3) payment posting accuracy and refund discipline; (4) contract variance recovery across your top plans; (5) transparent KPIs reported weekly. Build a one-page intake with your documentation accuracy gaps and CDI queries to ensure vendors coach clinicians, not just work denials (clinical documentation essentials, CDI field guide). For multi-state groups, align terminology and modifier/POS usage using our state certification series for onboarding consistency (California roadmap, Florida specifics, Illinois guidance).

Top 100 Outsourced Medical Billing Firms for Private Practices & Clinics — 2025

Columns: Firm • Best For • Core Services • Hiring Model • Notes • Site. Use as a live shortlist during vendor demos.

#	Firm	Best For	Core Services	Hiring Model	Notes	Website
1	R1 RCM	Hospital-affiliated clinics	End-to-end RCM, coding, AR	FTE + project	Enterprise reporting	Visit
2	Ensemble Health Partners	Multi-hospital groups	Denials, coding, rev integrity	Managed services	KPI governance	Visit
3	Parallon	Large systems & clinics	Billing, AR, coding	FTE	Scale + controls	Visit
4	FinThrive (nThrive)	Hospitals & ambulatory	AR, denials, analytics	Subscription + MS	Contract variance tools	Visit
5	Optum (Optum360)	Enterprise clinics	Coding, CDI, AR	FTE + offshore	Risk adj strength	Visit
6	Xtend Healthcare	Hospitals/IDNs	AR follow-up, cash accel	Project + FTE	Rapid cash teams	Visit
7	AGS Health	Mid-to-large providers	Medical coding, billing	Global delivery	High-volume specialties	Visit
8	GeBBS Healthcare	Physician groups	RCM, coding, AR	FTE + project	QA frameworks	Visit
9	Omega Healthcare	Multi-specialty clinics	Billing, coding, CDI	Offshore/nearshore	MEAT/HCC depth	Visit
10	Access Healthcare	Large practices	Denials, AR, coding	Global teams	Throughput focus	Visit
11	Coronis Health	Specialty groups	RCM, coding, analytics	FTE	Specialty pods	Visit
12	Plutus Health	Private practices	Billing, AR, coding	FTE + project	Automation use	Visit
13	3Gen Consulting	Radiology/Pathology	Specialty coding, AR	FTE	Imaging strength	Visit
14	PracticeMax	Ambulatory practices	RCM, PM, analytics	FTE	Physician-centric	Visit
15	CorroHealth	Hospitals/physician groups	Coding, CDI, audits	FTE/project	DRG & risk depth	Visit
16	CSI Companies (RCM)	Scaling clinics	Staff aug, billing	Contract/FTE	Rapid staffing	Visit
17	Medusind	Outpatient groups	RCM, coding, AR	FTE	Dental-medical cross	Visit
18	CareCloud RCM	Small-to-mid practices	Billing on CareCloud	SaaS + services	Platform-native	Visit
19	athenahealth RCM	Ambulatory groups	Billing on athenaOne	Percent of collections	Benchmarking	Visit
20	NextGen RCM	Multi-specialty clinics	RCM on NextGen	SaaS + MS	Specialty content	Visit
21	Greenway Revenue Services	Primary care	Billing on Greenway	SaaS + services	Small practice fit	Visit
22	eClinicalWorks RCM	ECW users	Billing, AR	Percent of net	Portal strength	Visit
23	AdvancedMD RCM	Independent clinics	Billing on AdvancedMD	SaaS + MS	Robust edits	Visit
24	Tebra (Kareo) RCM	Small practice launchers	Billing on Tebra	Percent model	Telehealth tie-ins	Visit
25	DrChrono RCM	Mobile-first groups	Billing on DrChrono	SaaS + MS	Apple-centric	Visit
26	PracticeSuite RCM	Budget-minded clinics	Billing, AR	Percent + flat	Clearinghouse ties	Visit
27	SyMed / Aprima RCM	Aprima users	Billing, coding	SaaS + MS	Integrated PM	Visit
28	CureMD RCM	Specialty clinics	Billing on CureMD	Percent model	All-in-one stack	Visit
29	ChartLogic RCM	Surgical practices	Billing, coding	SaaS + MS	Op note tools	Visit
30	ModMed Boost	Derm/ENT/Ophtho	Billing on ModMed	Percent of collections	Specialty content	Visit
31	CorVel RCM	OccMed/Workers’ comp	Billing, AR	Project + FTE	WC expertise	Visit
32	Change Healthcare Services*	Mixed ambulatory	RCM services	FTE	Clearinghouse links	Visit
33	Guidehouse	Enterprise clinics	RCM strategy + ops	Consulting/MS	Transformations	Visit
34	Sutherland Healthcare	Large groups	Billing, AR, EDI	Global delivery	Automation heavy	Visit
35	Cognizant Healthcare	Enterprise practices	RCM ops + tech	Managed services	EDI strength	Visit
36	Infosys BPM – Healthcare	Scaling networks	Billing, AR, coding	Global COEs	Analytics focus	Visit
37	Wipro Health RCM	Large providers	Denials, AR	Global delivery	Automation playbooks	Visit
38	Huron	Academic groups	Rev integrity, coding	Consulting + MS	Change mgmt	Visit
39	Conifer Health Solutions	Health systems	RCM, denials	FTE	System-grade scale	Visit
40	R1 Entri (physician services)	Large clinics	Billing, AR	Percent/FTE	KPI maturity	Visit
41	PracticeForces	Small & mid clinics	Billing, coding	FTE	Owner-operator feel	Visit
42	BillingParadise	Ambulatory	Billing, AR, analytics	FTE	Dashboard focus	Visit
43	UControl Billing	New practices	End-to-end billing	Percent	Quick launches	Visit
44	24/7 Medical Billing Services	Multi-specialty	Billing, coding, AR	FTE	Night shift cover	Visit
45	Synergy RCM	Private clinics	Claims, AR, appeals	FTE	US+offshore mix	Visit
46	PracticeBridge	Startups	Billing, enrollment	Percent	Credentialing add-on	Visit
47	Promantra	Post-acute/long-term	RCM, coding	Global delivery	LTC expertise	Visit
48	Vee Technologies	Large clinics	Billing, coding	FTE	Six Sigma QA	Visit
49	Medusind Dental/Medical	Dent-med crossover	RCM, coding	FTE	Cross-coding	Visit
50	AQuity Solutions	Documentation + coding	Scribing, coding, audits	FTE	CDI alignment	Visit
51	RCM360	Multi-site groups	Billing, AR, denials	FTE	KPI scorecards	Visit
52	Practice EHR RCM	Platform users	Billing on PracticeEHR	Percent	Simple pricing	Visit
53	Experity RCM	Urgent care	RCM + EHR	SaaS + MS	UC workflows	Visit
54	Waystar Professional Services	AR acceleration	Denials/AR projects	Project	Tool-powered	Visit
55	Cedarbridge RCM	Growing practices	Billing, AR	Percent	Owner-led	Visit
56	iRCM	NY/NJ clinics	Billing, coding, AR	FTE	Regional payers	Visit
57	MBMS	Pathology groups	RCM, coding	FTE	Specialty depth	Visit
58	AIMA RCM	Imaging/Anesthesia	Billing, coding	FTE	Specialty pods	Visit
59	Gryphon RCM	Independent clinics	Claims, AR, appeals	Percent	Transparent KPIs	Visit
60	Quadax Services	Labs & diagnostic	RCM + clearinghouse	MS + tools	Lab edits depth	Visit
61	ZS/EVERSANA RCM	Specialty providers	Rev ops, access	Consulting/MS	Pharma adjacencies	Visit
62	Ventra Health	Anesthesia/ER/Path	RCM, coding	FTE	Hospital-based	Visit
63	TeamHealth RCM	Emergency medicine	Billing, coding	FTE	ED throughput	Visit
64	Medusind Anesthesia	Anesthesia	Billing, AR	FTE	Time unit mastery	Visit
65	EnableComp	Workers’ comp/MVA	Denials, AR	Contingent	Complex payers	Visit
66	PMMC Services	Contracting + AR	Underpayment recovery	Project	Variance analytics	Visit
67	Echo Health RCM	AR & posting	Cash apps, ERA	Project	Payment expertise	Visit
68	Coronis: Behavioral Health	BH/tele-therapy	Billing, auths	FTE	Parity savvy	Visit
69	Gables Medical Billing	Florida clinics	Billing, AR	Percent	Regional payer intel	Visit
70	Revele (formerly GroupOne)	Allscripts/Veradigm users	RCM + EHR	SaaS + MS	EHR-native	Visit
71	eMDs RCM	Aprima/eMDs clinics	Billing, AR	SaaS + MS	Practice ops	Visit
72	TriZetto/Facets Services*	Larger groups	EDI/RCM services	Project	Platform lineage	Visit
73	Veeva Partner RCM	Specialty clinics	Access + billing	MS	Hub adjacencies	Visit
74	P3 Healthcare	Small practices	Billing, MIPS/MACRA	FTE	QPP support	Visit
75	Billing4Psych	Behavioral health	Tele-E/M billing	Percent	BH policies	Visit
76	ClaimCare	Family/Internal med	Billing, AR	Percent	Clean-claim focus	Visit
77	Alpine Medical Billing	Therapy/PT/OT	Billing, auths	Percent	Rehab expertise	Visit
78	Nexus Medical Billing	Startup clinics	RCM + setup	Percent	Credentialing bundle	Visit
79	Medusind DME	DME suppliers	Billing, CMNs	FTE	Documentation proofs	Visit
80	ZOLL AR Boost (services)	EMS/ED adjacencies	AR acceleration	Project	Collections uplift	Visit
81	Rivet Services	Estimate + AR	Underpayment, denials	Project	Contract clarity	Visit
82	Rectangle Health	Payment posting	Cash apps, refunds	Project	Patient pay tools	Visit
83	Office Ally Services	Small practices	Billing + clearinghouse	Low flat + percent	Budget fit	Visit
84	SimplePractice RCM	Therapists	Billing, claims	SaaS + MS	BH self-service	Visit
85	TheraNest RCM	BH group practices	Billing, AR	SaaS + MS	BH reports	Visit
86	PracticeWeb	Dental-medical	Billing, AR	Percent	Eligibility strength	Visit
87	P3Care MIPS Services	QPP/MACRA add-on	MIPS reporting + RCM	Project + FTE	Regulatory tie-in	Visit
88	CollaborateMD Services	CMD users	Billing, AR	SaaS + MS	Clearinghouse native	Visit
89	DrBill	Canada practices	Claims to provincial payers	SaaS + MS	Non-US note	Visit
90	AthenaOne Accelerator	Fast-growing clinics	Intake + RCM	Percent	Playbooks baked-in	Visit
91	MedHelp, Inc.	Specialty clinics	Billing, AR	FTE	Appeals strength	Visit
92	Millennium Medical Billing	NY/NJ practices	Billing, coding	Percent	Regional focus	Visit
93	Noble House Medical Billing	Small practices	Billing, AR	Percent	Transparent fees	Visit
94	Questns RCM	Ambulatory	Claims, denials	FTE	Automation lite	Visit
95	ProMD Practice Management	Growing clinics	RCM + PM	FTE	Ops consulting	Visit
96	STAT MedCare	Multi-specialty	Billing, coding	Percent	US-based teams	Visit
97	ClinicMind RCM	Chiro/PT	Billing + EHR	SaaS + MS	Rehab focus	Visit
98	Athreon (scribe + coding)	Doc-heavy clinics	Virtual scribing, coding	FTE	Provider adoption	Visit
99	Human Medical Billing	Small practices	Billing, AR	Percent	Hands-on service	Visit
100	Precision Practice Management	Multi-specialty clinics	RCM + EHR	FTE	Full-stack ops	Visit

*Branding/platform alignments may vary by year. Confirm current structures during diligence.

Buyer’s scorecard (plug this into your demo process)

For each vendor demo, require: a payor-specific denials prevention plan tied to your top CARCs; two audit samples with coder coaching notes; a payment posting exception log that shows refund discipline; and a weekly KPI view with first-pass yield, days in A/R, and underpayment finds. Ask how they’ll embed ethical billing into workflows and how documentation fixes will close the loop with clinicians (denials prevention, audit methodology, payment posting controls, ethical standards). For groups spanning several states, standardize modifier/POS usage with our state certification series (Massachusetts notes, Georgia nuances).

What’s your #1 outsourcing goal for 2025?

Boost first-pass yield Cut days in A/R Slash denials at the root Tighten payment posting/refunds Improve risk/CDI accuracy Automate repetitive RCM tasks Vote

We’ll publish step-by-step playbooks based on what you choose.

Implementation timeline (90-day vendor ramp that actually works)

Days 1–14 — Baseline & pilots. Document your current claims submission flow and error taxonomy. Hand vendors a 2-week pilot: one clinic, two payers, three services (e.g., telemedicine E/M, bariatric surgery, interventional radiology) to expose bundling and modifier traps (claims pipeline, telehealth coding, bariatric specifics, IR advanced).

Days 15–45 — Denials prevention build. Roll out CARC-based worklists, provider feedback, and CDI prompts. Require weekly QA plus a coding audit cycle on 5% of charts to stabilize accuracy (CARC decoder, CDI prompts, audit framework).

Days 46–75 — AR acceleration. Instrument payment posting exceptions and underpayment hunts against contracts. Publish first-pass yield and days in A/R trendlines; escalate high-friction payers for root-cause fixes (posting SOPs, denials prevention).

Days 76–90 — Governance & ethics. Finalize HIPAA/BAA and ethical billing SOPs with audit trails. Lock quarterly MACRA/QPP checkpoints for measure alignment and revenue integrity (HIPAA essentials, ethical principles, MACRA/QPP primer).

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Contract structures & pricing (what to negotiate)

• Percent of net collections for smaller practices using a vendor’s PM/EHR—push for SLA-backed first-pass yield and denial rate targets.

• FTE-based for scaled groups that need embedded team leads, with variable pricing on coding audits, CDI mentoring, and payer escalations.

• Project/contingent for underpayment recovery, legacy A/R clean-ups, and seasonal backlogs. Build a strict definition of qualified recovery and independent QA.

• Insist on weekly dashboards, line-level CARC analysis, and a standing coding audit cadence (denials blueprint, audit cadence). For multi-state clinics, standardize documentation using the state series to avoid modifier/POS drift (Arizona guidance, Maryland cues, Colorado nuances).

FAQs (detailed)

• Q1. How do I know if outsourcing is actually working?

  Within 30–45 days, you should see: fewer front-end edits, first-pass yield trending up, denials shifting from avoidable to clinical/contractual, and days in A/R dropping. Require payer-level CARC dashboards and monthly coding audits with remediation notes (CARC analysis, audit framework).

• Q2. Should I keep coding in-house and outsource only AR?

  Hybrid models can work. If documentation is inconsistent, consider external coding + CDI for a quarter to stabilize specificity, then insource coding and leave AR outsourced. Keep payment posting and appeals KPIs transparent regardless (CDI playbook, posting controls).

• Q3. How do I prevent vendor lock-in?

  Own your claim edits, CARC taxonomy, and appeal templates. Negotiate data-export formats, retain admin rights to your PM/EHR, and keep internal SOPs mirroring vendor workflows so you can swap without revenue shock (claims submission map, denials prevention).

• Q4. What’s the #1 red flag in RCM proposals?

  “We’ll just work denials.” You want a plan that prevents denials with documentation coaching, correct modifier/POS use (especially for telehealth), and provider-friendly feedback loops (telemedicine coding nuance, accurate documentation habits).

• Q5. How should we handle HIPAA and audits with offshore teams?

  Match vendor controls to your HIPAA SOPs: encrypted devices, role-based access, screen privacy, and audit logs. Run quarterly coding audits on vendor work and verify ethical billing training completion (HIPAA essentials, audit discipline, ethics standards).

• Q6. Our specialty is tricky—what should the pilot include?

  Pick charts that mix bundling rules, device usage, and high-denial families. For example, combine bariatric surgery, interventional radiology, and complex trauma to test clinical reasoning, documentation prompts, and payer nuance (bariatric coding, IR advanced, trauma coding).

• Q7. What KPIs should be in the contract?

  Baseline and target first-pass yield, clean claim rate, denial rate (avoidable vs. clinical), days in A/R, underpayment dollars identified/recovered, and refund/write-off discipline—plus a cadence of MACRA/QPP checkpoints where relevant (MACRA overview).

• Q8. How do we upskill our internal team while outsourcing?

  Run monthly vendor-led coding audits with side-by-side education, and enroll staff in focused study sprints on documentation and claims—use our study strategies routines to keep retention high (study methods, accurate documentation).