NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1528035763 M.D., PH.D.
Verify on CMS → Robert Wehmann, M.D., PH.D.
Endocrinology, Diabetes & Metabolism Physician in South Chesterfield, Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism 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
809
Medicare Part D claims · 76 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
62%
generic claims · 32% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Robert Wehmann, M.D., PH.D. filed 809 Medicare Part D claims in 2023 as an Endocrinology, Diabetes & Metabolism Physician in South Chesterfield, Virginia, prescribing 62% generic.
- 809
- Part D claims, 2023
- 62%
- generic prescribing
- ≥73rd
- pct by Part D claim volume (lower-bound band)
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.
Robert Wehmann, M.D., PH.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
809 ≥ 73rd percentile 73% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Robert Wehmann, M.D., PH.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 Robert Wehmann, M.D., PH.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
809 69% vs specialty avg
Specialty distribution in Virginia
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Virginia 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 Endocrinology, Diabetes & Metabolism 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).
Robert Wehmann, M.D., PH.D. appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding M.D., PH.D. credentials at 518 REBEL RIDGE RD, South Chesterfield, VA, 23834, with a listed phone of (201) 914-3479. NPI 1528035763 was issued on 03/07/2006.
Medicare Part D records for calendar year 2023 show 809 prescription claims written by this provider, covering 76 Medicare beneficiaries and totaling roughly $257K in drug spend, split 32% brand-name and 62% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1528035763 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D., PH.D. |
| Gender | Male |
| NPI Issued | 03/07/2006 |
Brand vs generic prescribing mix · Above average
Robert Wehmann, M.D., PH.D. - brand share 32.0%
Endocrinology, Diabetes & Metabolism Physician average
32% brand-name claims vs 62% generic, on 809 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.
809
Total Claims
$257K
Total Drug Cost
76
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,253
- Total Day Supply
- 67,314
- Brand vs Generic
- 32% brand / 62% generic
- Brand Drug Cost
- $238K
- Generic Drug Cost
- $14K
Patient Demographics
- Average Patient Age
- 77.8 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 55% female / 45% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Robert Wehmann, M.D., PH.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
79 claims
- Metformin Hcl Er
Metformin Hcl Er
62 claims
- Glimepiride
Glimepiride
43 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
43 claims
- Synthroid 28
Synthroid
28 claims
- Metformin Hcl 24
Metformin Hcl
24 claims
- Simvastatin 22
Simvastatin
22 claims
- Glipizide Er 21
Glipizide Er
21 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 79 |
| Metformin Hcl Er Metformin Hcl | 62 |
| Glimepiride | 43 |
| Rosuvastatin Calcium | 43 |
| Synthroid Levothyroxine Sodium | 28 |
| Metformin Hcl | 24 |
| Simvastatin | 22 |
| Glipizide Er Glipizide | 21 |
| Lisinopril | 20 |
| Losartan Potassium | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in VA →
All providers in Virginia →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Robert Wehmann, M.D., PH.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Robert Wehmann, M.D., PH.D.'s 809 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Wehmann.
Dr. Mustapha Abdul-Rahman
MD
Winchester, VA
Dr. Robert Adler
M.D.
Richmond, VA
Dr. Samina Afreen
MD
Charlottesville, VA
Dr. Miriam Ahmad
M.D.
Falls Church, VA
Dr. Ahmed Al Dabbagh
MBCHB
Suffolk, VA
Compare Endocrinology, Diabetes & Metabolism 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 Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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 Robert Wehmann, M.D., PH.D.'s specialty? ▼
Robert Wehmann, M.D., PH.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in South Chesterfield, Virginia. Credentials: M.D., PH.D..
How much does Robert Wehmann, M.D., PH.D. prescribe under Medicare Part D? ▼
In 2023, Robert Wehmann, M.D., PH.D. wrote 809 Medicare Part D claims totaling $257K in drug costs for 76 beneficiaries.
Where is Robert Wehmann, M.D., PH.D. located? ▼
Robert Wehmann, M.D., PH.D. is located at 518 REBEL RIDGE RD, South Chesterfield, VA, 23834. Phone: (201) 914-3479.
What is Robert Wehmann, M.D., PH.D.'s NPI number? ▼
Robert Wehmann, M.D., PH.D.'s National Provider Identifier (NPI) is 1528035763, issued on 03/07/2006.
Does Robert Wehmann, M.D., PH.D. prescribe more brand-name or generic drugs? ▼
Robert Wehmann, M.D., PH.D.'s prescribing is 32% brand-name and 62% generic drugs by claim count, with $238K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Robert Wehmann, M.D., PH.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Robert Wehmann, M.D., PH.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Metformin Hcl Er, Glimepiride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Wehmann, M.D., PH.D. accept Medicare? ▼
Robert Wehmann, M.D., PH.D. appears in CMS Medicare data with 809 Part D claims and 76 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Wehmann, M.D., PH.D.'s credentials? ▼
Robert Wehmann, M.D., PH.D.'s NPI is 1528035763 with credentials M.D., PH.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
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.