2026 NPPES data Obstetrics & Gynecology Physician NPI 1225050552 M.D.
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SAMIR HAMATI, M.D.

Obstetrics & Gynecology Physician in SPRING LAKE, Michigan. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
466
Medicare Part D claims · 131 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
61%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SAMIR HAMATI, M.D. filed 466 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in SPRING LAKE, Michigan, prescribing 61% generic.

466
Part D claims, 2023
61%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

SAMIR HAMATI, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

466 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

SAMIR HAMATI, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about SAMIR HAMATI, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/24/2006

NPI 1225050552

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

466 160% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Michigan

How Obstetrics & Gynecology Physician compares to other specialties among Michigan providers

Michigan providers

Obstetrics & Gynecology Physician share within Michigan

1. Obstetrics & Gynecology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics & Gynecology Physician share within Michigan

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obstetrics & Gynecology Physician ABMS/AOA estimate

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

SAMIR HAMATI, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 17208 VANWAGONER RD, SPRING LAKE, MI, 49456, with a listed phone of (231) 724-7840. NPI 1225050552 was issued on 07/24/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HAMATI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 466 prescription claims written by this provider, covering 131 Medicare beneficiaries and totaling roughly $115K in drug spend, split 39% brand-name and 61% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

17208 VANWAGONER RD
SPRING LAKE, MI 49456

Provider Details

NPI 1225050552
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Male
NPI Issued 07/24/2006

License & disciplinary context — Michigan MI-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 — they are NOT specific to SAMIR HAMATI, M.D.. To verify SAMIR HAMATI, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

SAMIR HAMATI, M.D. — brand share 39.0%
Specialty average (est.)

39% brand-name claims vs 61% generic, on 466 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

466
Total Claims
$115K
Total Drug Cost
131
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,016
Total Day Supply
29,251
Brand vs Generic
39% brand / 61% generic
Brand Drug Cost
$94K
Generic Drug Cost
$21K
Antibiotic Claims
73

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
0.87
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What SAMIR HAMATI, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Estradiol
62
Nitrofurantoin
Nitrofurantoin Macrocrystal
48
Myrbetriq
Mirabegron
44
Clobetasol Propionate
40
Gemtesa
Vibegron
36
Estradiol (Twice Weekly)
Estradiol
25
Raloxifene Hcl
24
Dotti
Estradiol
22
Fluconazole
22
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
22

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Obstetrics & Gynecology Physician Overview

How SAMIR HAMATI, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

SAMIR HAMATI, M.D.'s 466 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Michigan

Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as HAMATI.

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SAMIR HAMATI, M.D.'s specialty?
SAMIR HAMATI, M.D. specializes in Obstetrics & Gynecology Physician and practices in SPRING LAKE, Michigan. Credentials: M.D..
How much does SAMIR HAMATI, M.D. prescribe under Medicare Part D?
In 2023, SAMIR HAMATI, M.D. wrote 466 Medicare Part D claims totaling $115K in drug costs for 131 beneficiaries.
Where is SAMIR HAMATI, M.D. located?
SAMIR HAMATI, M.D. is located at 17208 VANWAGONER RD, SPRING LAKE, MI, 49456. Phone: (231) 724-7840.
What is SAMIR HAMATI, M.D.'s NPI number?
SAMIR HAMATI, M.D.'s National Provider Identifier (NPI) is 1225050552, issued on 07/24/2006.
Does SAMIR HAMATI, M.D. prescribe more brand-name or generic drugs?
SAMIR HAMATI, M.D.'s prescribing is 39% brand-name and 61% generic drugs by claim count, with $94K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does SAMIR HAMATI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SAMIR HAMATI, M.D.'s most frequently prescribed drugs include Estradiol, Nitrofurantoin, Myrbetriq. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SAMIR HAMATI, M.D. accept Medicare?
SAMIR HAMATI, M.D. appears in CMS Medicare data with 466 Part D claims and 131 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SAMIR HAMATI, M.D.'s credentials?
SAMIR HAMATI, M.D.'s NPI is 1225050552 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology