NPI registry status
Active
2026 NPPES data Hematology (Internal Medicine) Physician NPI 1659631729 M.D.
Verify on CMS → Dahlia Sano, M.D.
Hematology (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 1,436 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
281
Medicare Part D claims · 51 beneficiaries · Hematology (Internal Medicine) Physician avg: 693
Generic prescribing
93%
generic claims · 7% 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
Dahlia Sano, M.D. filed 281 Medicare Part D claims in 2023 as a Hematology (Internal Medicine) Physician in Ann Arbor, Michigan, prescribing 93% generic.
- 281
- Part D claims, 2023
- 93%
- 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.
Dahlia Sano, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
281 49th percentile higher than 49% 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)
Dahlia Sano, 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 Dahlia Sano, M.D.?
Quality data not reportedPrimary specialty
Hematology (Internal Medicine) Physician
Medicare Part D claims
281 59% vs specialty avg
Specialty distribution in Michigan
How Hematology (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 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).
Dahlia Sano, M.D. appears in the CMS NPPES registry as a Hematology (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 1659631729 was issued on 05/23/2012.
Medicare Part D records for calendar year 2023 show 281 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $292K in drug spend, split 7% brand-name and 93% generic by claim count.
Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,436 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 | 1659631729 |
|---|---|
| Specialty | Hematology (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 05/23/2012 |
Hospital and facility affiliations
Facilities where Dahlia Sano, 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.
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 Dahlia Sano, M.D.. To verify Dahlia Sano, 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 · Generic-heavy
Dahlia Sano, M.D. - brand share 7.0%
Hematology (Internal Medicine) Physician average
7% brand-name claims vs 93% generic, on 281 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.
281
Total Claims
$292K
Total Drug Cost
51
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 406
- Total Day Supply
- 10,309
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $286K
- Generic Drug Cost
- $5K
- Antibiotic Claims
- 29
Patient Demographics
- Average Patient Age
- 73.6 years
- Avg HCC Risk Score
- 2.32
- Gender Split
- 43% female / 57% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dahlia Sano, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Acyclovir
Acyclovir
85 claims
- Famotidine
Famotidine
36 claims
- Prednisone
Prednisone
35 claims
- Ondansetron Hcl 25
Ondansetron Hcl
25 claims
- Sulfamethoxazole-T… 24
Sulfamethoxazole-Trimethoprim
24 claims
| Drug | Claims |
|---|---|
| Acyclovir | 85 |
| Famotidine | 36 |
| Prednisone | 35 |
| Ondansetron Hcl | 25 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 24 |
* 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 MI →
All providers in Michigan →
Compare specialties →
Hematology (Internal Medicine) Physician Overview
How Dahlia Sano, M.D. fits within the Hematology (Internal Medicine) Physician landscape nationally.
1,436
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider
Dahlia Sano, M.D.'s 281 claims are below the specialty average of 693.
Nearby Hematology (Internal Medicine) Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Sano.
Dr. Syed Muneer Abidi
MD
Grand Rapids, MI
Dr. Daniel Arnold
MD
Marquette, MI
Dr. M Elizabeth Atkinson
MD
Grand Rapids, MI
Dr. Mark Chiang
MD
Ann Arbor, MI
Dr. Rashmi Chugh
MD
Ann Arbor, MI
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 Michigan 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 Dahlia Sano, M.D.'s specialty? ▼
Dahlia Sano, M.D. specializes in Hematology (Internal Medicine) Physician and practices in Ann Arbor, Michigan. Credentials: M.D..
How much does Dahlia Sano, M.D. prescribe under Medicare Part D? ▼
In 2023, Dahlia Sano, M.D. wrote 281 Medicare Part D claims totaling $292K in drug costs for 51 beneficiaries.
Where is Dahlia Sano, M.D. located? ▼
Dahlia Sano, M.D. is located at 1500 E MEDICAL CENTER DR, Ann Arbor, MI, 48109. Phone: (734) 936-4000.
What is Dahlia Sano, M.D.'s NPI number? ▼
Dahlia Sano, M.D.'s National Provider Identifier (NPI) is 1659631729, issued on 05/23/2012.
Does Dahlia Sano, M.D. prescribe more brand-name or generic drugs? ▼
Dahlia Sano, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $286K in brand drug costs.
How many Hematology (Internal Medicine) Physician providers are there in the US? ▼
There are 1,436 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 Dahlia Sano, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Dahlia Sano, M.D.'s most frequently prescribed drugs include Acyclovir, Famotidine, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dahlia Sano, M.D. accept Medicare? ▼
Dahlia Sano, M.D. appears in CMS Medicare data with 281 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dahlia Sano, M.D.'s credentials? ▼
Dahlia Sano, M.D.'s NPI is 1659631729 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.