What is Jonathan Posin's specialty?

Jonathan Posin (NPI 1396780425) is a Medicare-billing provider whose primary specialty is Diagnostic Radiology in Walnut Creek, CA.

Where does Jonathan Posin practice?

Jonathan Posin practices in Walnut Creek, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1396780425.

How much does Medicare pay Jonathan Posin?

Jonathan Posin (NPI 1396780425) received approximately $154K in total Medicare Part B payments, serving 5,268 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1396780425

Jonathan PosinM.D.

Diagnostic RadiologyWalnut Creek, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

6,511

Unique beneficiaries

—

Total services

6,736

Distinct HCPCS

Medicare payment

$139K

Peer benchmark

Total Medicare services vs. 3,474 Diagnostic Radiology providers in CA — above median (cohort median 2,975).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

97.3

Quality

89.9

Cost

78.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.94%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Jonathan Posin's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 310 inbound referrers · 632 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
STANFORD HEALTH CARE TRI-VALLEY	369	682
Angelo Crudale Diagnostic Radiology · Walnut Creek, CA	368	659
Sunil Gandhi Diagnostic Radiology · Walnut Creek, CA	276	489
Amy Lai Diagnostic Radiology · New York, NY	268	500
Kimberly Blumberg Diagnostic Radiology · Walnut Creek, CA	260	468
Saurabh Patel Diagnostic Radiology · Walnut Creek, CA	210	329
Ronald Chan Diagnostic Radiology · Walnut Creek, CA	203	314
Daniel Kim Diagnostic Radiology · Walnut Creek, CA	192	334
Mark Tu Diagnostic Radiology · Walnut Creek, CA	185	373
Joan Reynolds Diagnostic Radiology · Walnut Creek, CA	175	271
Eric Chen Interventional Radiology · Los Angeles, CA	172	262
Susan Cha Diagnostic Radiology · Walnut Creek, CA	163	257

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
JOHN MUIR HEALTH	1,888	3,097
JOHN MUIR HEALTH	1,279	1,971
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	1,133	2,506
American Medical Response West Ambulance Service Provider · Concord, CA	509	752
William Hoddick Diagnostic Radiology · Walnut Creek, CA	471	1,054
North Star Emergency Services, Inc. Ambulance Service Provider · Livermore, CA	350	520
JOHN MUIR HEALTH	319	390
Angelo Crudale Diagnostic Radiology · Walnut Creek, CA	281	478
SIGEL, RICHARD	258	463
Sunil Gandhi Diagnostic Radiology · Walnut Creek, CA	242	437
Amy Lai Diagnostic Radiology · New York, NY	214	410
Kirk So Diagnostic Radiology · Walnut Creek, CA	209	324

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events