NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1730370255 M.D.
Verify on CMS → Marjorie Pennant, M.D.
Endocrinology, Diabetes & Metabolism Physician in Baltimore, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,078 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
2K
Medicare Part D claims · 276 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
40%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Marjorie Pennant, M.D. filed 2,007 Medicare Part D claims in 2024 as an Endocrinology, Diabetes & Metabolism Physician in Baltimore, Maryland, prescribing 40% generic.
- 2K
- Part D claims, 2024
- 40%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥84th
- 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.
Federal trust snapshot
What official records show about Marjorie Pennant, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1730370255), first enumerated 08/08/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,007 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1730370255 · Endocrinology, Diabetes & Metabolism Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1730370255
- ENUM-MID 2007
- TAX-MID 8K Endocrinology, Diabetes
- RX-MID 2,007
- BOOK-THIN 251 in Maryland
- PHOTO-ENUM Marisabel Bravo · 2007
Marjorie Pennant, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
2,007 ≥ 84th percentile 84% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Marjorie Pennant, 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 Marjorie Pennant, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
2,007 27% vs specialty avg
Specialty distribution in Maryland
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Maryland 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).
Practice Address
Provider Details
| NPI | 1730370255 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 08/08/2007 |
Hospital and facility affiliations
Facilities where Marjorie Pennant, 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.
University OF Maryland Physicians PA
Baltimore, MD
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 · Brand-heavy
Marjorie Pennant, M.D. - brand share 52.0%
Endocrinology, Diabetes & Metabolism Physician average
52% brand-name claims vs 40% generic, on 2,007 2024 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 2024.
2,007
Total Claims
$881K
Total Drug Cost
276
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,628.167
- Total Day Supply
- 106,398
- Brand vs Generic
- 52% brand / 40% generic
- Brand Drug Cost
- $838K
- Generic Drug Cost
- $21K
Patient Demographics
- Average Patient Age
- 67.2 years
- Avg HCC Risk Score
- 2.18
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 91, 65-74: 113, 75-84: 54, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Marjorie Pennant, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Ozempic
Ozempic
229 claims
- Levothyroxine Sodium
Levothyroxine Sodium
159 claims
- Trulicity
Trulicity
96 claims
- Jardiance
Jardiance
92 claims
- Metformin Hcl Er 82
Metformin Hcl Er
82 claims
- Atorvastatin Calcium 81
Atorvastatin Calcium
81 claims
- Mounjaro 76
Mounjaro
76 claims
- Methimazole 67
Methimazole
67 claims
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 229 |
| Levothyroxine Sodium | 159 |
| Trulicity Dulaglutide | 96 |
| Jardiance Empagliflozin | 92 |
| Metformin Hcl Er Metformin Hcl | 82 |
| Atorvastatin Calcium | 81 |
| Mounjaro Tirzepatide | 76 |
| Methimazole | 67 |
| Basaglar Kwikpen U-100 Insulin Glargine,hum.Rec.Anlog | 63 |
| Ultra-Fine Mini Pen Needle Pen Needle, Diabetic | 61 |
* 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 MD →
All providers in Maryland →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Marjorie Pennant, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
8,078
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,739
Avg Claims per Provider
Marjorie Pennant, M.D.'s 2,007 claims are below the specialty average of 2,739.
Nationwide Endocrinology, Diabetes & Metabolism Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Pennant, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Pennant.
One of 251 Endocrinology, Diabetes & Metabolism Physician providers enrolled in Maryland, 5 are shown here.
Dr. Smita Abraham
MD
Silver Spring, MD
Georgette Abrell
RN
Baltimore, MD
Dr. Marnie Aguasvivas Bello
M.D.
Baltimore, MD
Dr. Rexford Ahima
MD
Baltimore, MD
Dr. Sabreen Ahmed
MD
Greenbelt, MD
Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Marjorie Pennant, M.D.'s specialty? ▼
Marjorie Pennant, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Baltimore, Maryland. Credentials: M.D..
How much does Marjorie Pennant, M.D. prescribe under Medicare Part D? ▼
In 2024, Marjorie Pennant, M.D. wrote 2,007 Medicare Part D claims totaling $881K in drug costs for 276 beneficiaries.
Where is Marjorie Pennant, M.D. located? ▼
Marjorie Pennant, M.D. is located at 827 LINDEN AVE, Baltimore, MD, 21201. Phone: (443) 682-6800.
What is Marjorie Pennant, M.D.'s NPI number? ▼
Marjorie Pennant, M.D.'s National Provider Identifier (NPI) is 1730370255, issued on 08/08/2007.
Does Marjorie Pennant, M.D. prescribe more brand-name or generic drugs? ▼
Marjorie Pennant, M.D.'s prescribing is 52% brand-name and 40% generic drugs by claim count, with $838K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 8,078 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,739 Medicare Part D claims per year.
What drugs does Marjorie Pennant, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Marjorie Pennant, M.D.'s most frequently prescribed drugs include Ozempic, Levothyroxine Sodium, Trulicity. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marjorie Pennant, M.D. accept Medicare? ▼
Marjorie Pennant, M.D. appears in CMS Medicare data with 2,007 Part D claims and 276 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marjorie Pennant, M.D.'s credentials? ▼
Marjorie Pennant, M.D.'s NPI is 1730370255 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.