What is Martha Gray's specialty?

Martha Gray (NPI 1801892294) is a Medicare-billing provider whose primary specialty is Internal Medicine in Ann Arbor, MI.

Where does Martha Gray practice?

Martha Gray practices in Ann Arbor, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1801892294.

How much does Medicare pay Martha Gray?

Martha Gray (NPI 1801892294) received approximately $69K in total Medicare Part B payments, serving 443 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1801892294

Martha GrayMD

PRACTICEPARTNERS IN INTERNAL MEDICINE PLLCSee all providers at this practice →

Internal MedicineAnn Arbor, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,237

Unique beneficiaries

—

Total services

1,590

Distinct HCPCS

Medicare payment

$60K

Peer benchmark

Total Medicare services vs. 3,459 Internal Medicine providers in MI — top quintile (cohort median 549).

PRESCRIBING · PART D · 2024

Total Rx claims

10,734

Beneficiaries

—

Total drug cost

$679K

Distinct drugs

118

Brand share

16.1%

Top prescribed drugs

Atorvastatin Calcium897 claims

Levothyroxine Sodium662 claims

Amlodipine Besylate661 claims

Lisinopril629 claims

Losartan Potassium554 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Martha Gray'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). 23 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
REGENTS OF THE UNIVERSITY OF MICHIGAN	72	301
Sara Hashemian Internal Medicine · Ann Arbor, MI	47	132
Eric Straka Internal Medicine · Ann Arbor, MI	36	74
Peter Paul Geriatric Medicine · Ann Arbor, MI	35	77
GIRARD, BLANKA	18	35
Oneil Lee Diagnostic Radiology · Ypsilanti, MI	18	29
Tauqir Goraya Cardiology · Ypsilanti, MI	17	60
Marlo Leonen Cardiology · Ypsilanti, MI	16	38
Jacob Livermore Diagnostic Radiology · Ypsilanti, MI	15	30
James Carl Diagnostic Radiology · Ypsilanti, MI	14	24
Mark Baumeier Diagnostic Radiology · Ypsilanti, MI	14	21
Timothy Shinn Clinical Cardiac Electrophysiology · Ypsilanti, MI	14	29

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