What is Jonathan Hemphill's specialty?

Jonathan Hemphill (NPI 1952405326) is a Medicare-billing provider whose primary specialty is Interventional Cardiology in Carmichael, CA.

Where does Jonathan Hemphill practice?

Jonathan Hemphill practices in Carmichael, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1952405326.

How much does Medicare pay Jonathan Hemphill?

Jonathan Hemphill (NPI 1952405326) received approximately $246K in total Medicare Part B payments, serving 1,146 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1952405326

Jonathan HemphillMD

Interventional CardiologyCarmichael, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,211

Unique beneficiaries

—

Total services

3,988

Distinct HCPCS

Medicare payment

$229K

Peer benchmark

Total Medicare services vs. 324 Interventional Cardiology providers in CA — above median (cohort median 2,656).

PRESCRIBING · PART D · 2024

Total Rx claims

6,069

Beneficiaries

—

Total drug cost

$2.1M

Distinct drugs

Brand share

30.0%

Top prescribed drugs

Apixaban597 claims

Atorvastatin Calcium535 claims

Metoprolol Succinate373 claims

Amlodipine Besylate345 claims

Losartan Potassium309 claims

QUALITY · MIPS · 2024

Final MIPS score

99.6

Quality

86.3

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.04%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$77

Payment records

By payment type

Food and Beverage$77

Top paying entities

Food and Beverage$77

REFERRAL NETWORK

Where Jonathan Hemphill'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). 69 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
FISHER, DANIEL	160	431
Stephen Morrison Internal Medicine · Carmichael, CA	87	177
Nick Majetich Interventional Cardiology · Carmichael, CA	73	168
Maria Parayno Nuclear Medicine · Duarte, CA	67	115
Scott Baron Interventional Cardiology · Carmichael, CA	63	291
Andrew Lee Diagnostic Radiology · Sacramento, CA	56	123
HAINES, PHILIP	55	153
Timothy Lee Cardiology · Carmichael, CA	55	109
Wen Lin Diagnostic Radiology · Palo Alto, CA	51	115
Mehrdad Jafarzadeh Cardiology · Carmichael, CA	45	82
Brian Fellmeth Diagnostic Radiology · Sacramento, CA	45	84
David Lao Interventional Cardiology · Carmichael, CA	41	104

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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