NPI registry status
Active
2026 NPPES data Hematology (Internal Medicine) Physician NPI 1518946987 M.D.
Verify on CMS → Ayalew Tefferi, M.D.
Hematology (Internal Medicine) Physician in Rochester, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,451 in Hematology (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
74
Medicare Part D claims · 22 beneficiaries · Hematology (Internal Medicine) Physician avg: 693
Generic prescribing
58%
generic claims · 42% 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
Ayalew Tefferi, M.D. filed 74 Medicare Part D claims in 2023 as a Hematology (Internal Medicine) Physician in Rochester, Minnesota, prescribing 58% generic.
- 74
- Part D claims, 2023
- 58%
- 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.
Ayalew Tefferi, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
74 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)
Ayalew Tefferi, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Ayalew Tefferi, M.D.?
Quality data not reportedPrimary specialty
Hematology (Internal Medicine) Physician
Medicare Part D claims
74 89% vs specialty avg
Specialty distribution in Minnesota
How Hematology (Internal Medicine) Physician compares to other specialties among Minnesota 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 Hematology (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).
Ayalew Tefferi, M.D. appears in the CMS NPPES registry as a Hematology (Internal Medicine) Physician provider holding M.D. credentials at 200 1ST ST SW, Rochester, MN, 55905, with a listed phone of (507) 284-2511. NPI 1518946987 was issued on 01/12/2006.
Medicare Part D records for calendar year 2023 show 74 prescription claims written by this provider, covering 22 Medicare beneficiaries and totaling roughly $430K in drug spend, split 42% brand-name and 58% generic by claim count.
Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,451 enrolled providers across 50 states and an average of 693 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 | 1518946987 |
|---|---|
| Specialty | Hematology (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 01/12/2006 |
Hospital and facility affiliations
Facilities where Ayalew Tefferi, 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.
Mayo Clinic
Rochester, MN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Above average
Ayalew Tefferi, M.D. - brand share 42.0%
Hematology (Internal Medicine) Physician average
42% brand-name claims vs 58% generic, on 74 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.
74
Total Claims
$430K
Total Drug Cost
22
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 114
- Total Day Supply
- 3,360
- Brand vs Generic
- 42% brand / 58% generic
- Brand Drug Cost
- $428K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 2.60
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 0, 65-74: 12, 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.
| Drug | Claims |
|---|---|
| Hydroxyurea | 34 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Hematology (Internal Medicine) Physician in MN →
All providers in Minnesota →
Compare specialties →
Hematology (Internal Medicine) Physician Overview
How Ayalew Tefferi, M.D. fits within the Hematology (Internal Medicine) Physician landscape nationally.
1,451
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider
Ayalew Tefferi, M.D.'s 74 claims are below the specialty average of 693.
Nearby Hematology (Internal Medicine) Physician Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Tefferi.
Dr. Hassan Alkhateeb
M.D
Rochester, MN
Ahmed Alnughmush
Rochester, MN
Abdullah Alsaleh
Rochester, MN
Ali Alsugair
Rochester, MN
Ruah Alyamany
Rochester, MN
Compare Hematology (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 Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hematology (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 Ayalew Tefferi, M.D.'s specialty? ▼
Ayalew Tefferi, M.D. specializes in Hematology (Internal Medicine) Physician and practices in Rochester, Minnesota. Credentials: M.D..
How much does Ayalew Tefferi, M.D. prescribe under Medicare Part D? ▼
In 2023, Ayalew Tefferi, M.D. wrote 74 Medicare Part D claims totaling $430K in drug costs for 22 beneficiaries.
Where is Ayalew Tefferi, M.D. located? ▼
Ayalew Tefferi, M.D. is located at 200 1ST ST SW, Rochester, MN, 55905. Phone: (507) 284-2511.
What is Ayalew Tefferi, M.D.'s NPI number? ▼
Ayalew Tefferi, M.D.'s National Provider Identifier (NPI) is 1518946987, issued on 01/12/2006.
Does Ayalew Tefferi, M.D. prescribe more brand-name or generic drugs? ▼
Ayalew Tefferi, M.D.'s prescribing is 42% brand-name and 58% generic drugs by claim count, with $428K in brand drug costs.
How many Hematology (Internal Medicine) Physician providers are there in the US? ▼
There are 1,451 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 693 Medicare Part D claims per year.
What drugs does Ayalew Tefferi, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Ayalew Tefferi, M.D.'s most frequently prescribed drugs include Hydroxyurea. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ayalew Tefferi, M.D. accept Medicare? ▼
Ayalew Tefferi, M.D. appears in CMS Medicare data with 74 Part D claims and 22 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ayalew Tefferi, M.D.'s credentials? ▼
Ayalew Tefferi, M.D.'s NPI is 1518946987 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.