NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1497016828 M.D.
Verify on CMS → Samara Rifkin, M.D.
Internal Medicine Physician in Ann Arbor, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
94
Medicare Part D claims · 43 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
56%
generic claims · 44% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Samara Rifkin, M.D. filed 94 Medicare Part D claims in 2023 as a Internal Medicine Physician in Ann Arbor, Michigan, prescribing 56% generic.
- 94
- Part D claims, 2023
- 56%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Samara Rifkin, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
94 0th percentile higher than 0% of 1,370,886 prescribers
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 certification likely (heuristic, not verified)
Samara Rifkin, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Samara Rifkin, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
94 97% vs specialty avg
Specialty distribution in Michigan
How Internal Medicine Physician compares to other specialties among Michigan providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Samara Rifkin, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 1500 E MEDICAL CENTER DR, Ann Arbor, MI, 48109, with a listed phone of (734) 936-4000. NPI 1497016828 was issued on 06/01/2012.
Medicare Part D records for calendar year 2023 show 94 prescription claims written by this provider, covering 43 Medicare beneficiaries and totaling roughly $23K in drug spend, split 44% brand-name and 56% generic by claim count.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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
Provider Details
| NPI | 1497016828 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/01/2012 |
Hospital and facility affiliations
Facilities where Samara Rifkin, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Lakeland Medical Practices
Saint Joseph, MI
Regents OF The University OF Michigan
Ann Arbor, MI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Samara Rifkin, M.D.. To verify Samara Rifkin, 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
Samara Rifkin, M.D. - brand share 44.0%
Internal Medicine Physician average
44% brand-name claims vs 56% generic, on 94 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.
94
Total Claims
$23K
Total Drug Cost
43
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 134
- Total Day Supply
- 2,931
- Brand vs Generic
- 44% brand / 56% generic
- Brand Drug Cost
- $22K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 64.7 years
- Avg HCC Risk Score
- 1.52
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 13, 65-74: 21, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Samara Rifkin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Peg 3350-Electrolyte
Peg 3350-Electrolyte
28 claims
- Linzess
Linzess
27 claims
- Omeprazole
Omeprazole
12 claims
| Drug | Claims |
|---|---|
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 28 |
| Linzess Linaclotide | 27 |
| Omeprazole | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Samara Rifkin, M.D. fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Samara Rifkin, M.D.'s 94 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Rifkin.
Dr. Keith Aaronson
MD
Ann Arbor, MI
Dr. Tomas Abalo
M.D.
Iron Mountain, MI
Dr. Ali Abbas
M.D.
Pontiac, MI
Dr. Hawazin Abbas
MD
Auburn Hills, MI
Dr. Imran Abbasi
D.O.
Warren, MI
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Samara Rifkin, M.D.'s specialty? ▼
Samara Rifkin, M.D. specializes in Internal Medicine Physician and practices in Ann Arbor, Michigan. Credentials: M.D..
How much does Samara Rifkin, M.D. prescribe under Medicare Part D? ▼
In 2023, Samara Rifkin, M.D. wrote 94 Medicare Part D claims totaling $23K in drug costs for 43 beneficiaries.
Where is Samara Rifkin, M.D. located? ▼
Samara Rifkin, M.D. is located at 1500 E MEDICAL CENTER DR, Ann Arbor, MI, 48109. Phone: (734) 936-4000.
What is Samara Rifkin, M.D.'s NPI number? ▼
Samara Rifkin, M.D.'s National Provider Identifier (NPI) is 1497016828, issued on 06/01/2012.
Does Samara Rifkin, M.D. prescribe more brand-name or generic drugs? ▼
Samara Rifkin, M.D.'s prescribing is 44% brand-name and 56% generic drugs by claim count, with $22K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Samara Rifkin, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Samara Rifkin, M.D.'s most frequently prescribed drugs include Peg 3350-Electrolyte, Linzess, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Samara Rifkin, M.D. accept Medicare? ▼
Samara Rifkin, M.D. appears in CMS Medicare data with 94 Part D claims and 43 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Samara Rifkin, M.D.'s credentials? ▼
Samara Rifkin, M.D.'s NPI is 1497016828 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.