NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1629378070 MD, MPH
Verify on CMS → Gul Bahtiyar, MD, MPH
Endocrinology, Diabetes & Metabolism Physician in Brooklyn, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,852 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
746
Medicare Part D claims · 122 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
44%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$29.1
1 payments · CMS Open Payments (Sunshine Act)
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
Gul Bahtiyar, MD, MPH filed 746 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Brooklyn, New York, prescribing 44% generic.
- 746
- Part D claims, 2023
- 44%
- generic prescribing
- $29.1
- industry payments (Sunshine Act)
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.
Gul Bahtiyar, MD, MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
746 Top 29% higher than 71% 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-eligible specialty (heuristic, not verified)
Gul Bahtiyar, MD, MPH 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 Gul Bahtiyar, MD, MPH?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
746 72% vs specialty avg
Specialty distribution in New York
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among New York 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).
Gul Bahtiyar, MD, MPH appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD, MPH credentials at 760 BROADWAY, Brooklyn, NY, 11206, with a listed phone of (718) 963-8000. NPI 1629378070 was issued on 11/01/2010.
Medicare Part D records for calendar year 2023 show 746 prescription claims written by this provider, covering 122 Medicare beneficiaries and totaling roughly $337K in drug spend, split 35% brand-name and 44% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 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 | 1629378070 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD, MPH |
| Gender | Female |
| NPI Issued | 11/01/2010 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gul Bahtiyar, MD, MPH. Source: openpaymentsdata.cms.gov.
Total received
$29
Largest payer
Corcept Therapeutics
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Gul Bahtiyar, MD, MPH. To verify Gul Bahtiyar, MD, MPH's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Above average
Gul Bahtiyar, MD, MPH - brand share 35.0%
Endocrinology, Diabetes & Metabolism Physician average
35% brand-name claims vs 44% generic, on 746 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.
746
Total Claims
$337K
Total Drug Cost
122
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,651
- Total Day Supply
- 49,028
- Brand vs Generic
- 35% brand / 44% generic
- Brand Drug Cost
- $310K
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 65.8 years
- Avg HCC Risk Score
- 1.93
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 39, 65-74: 56, 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 Gul Bahtiyar, MD, MPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
58 claims
- Novolog Flexpen
Novolog Flexpen
32 claims
- Metformin Hcl
Metformin Hcl
27 claims
- Methimazole 23
Methimazole
23 claims
- Lisinopril 21
Lisinopril
21 claims
- Ramipril 20
Ramipril
20 claims
- Farxiga 19
Farxiga
19 claims
- Alcohol Prep Pads 18
Alcohol Prep Pads
18 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 58 |
| Novolog Flexpen Insulin Aspart | 32 |
| Metformin Hcl | 27 |
| Methimazole | 23 |
| Lisinopril | 21 |
| Ramipril | 20 |
| Farxiga Dapagliflozin Propanediol | 19 |
| Alcohol Prep Pads Alcohol Antiseptic Pads | 18 |
| Levothyroxine Sodium | 18 |
| Amlodipine Besylate | 16 |
* 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 NY →
All providers in New York →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Gul Bahtiyar, MD, MPH fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Gul Bahtiyar, MD, MPH's 746 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Bahtiyar.
Dr. Zinoviy Abelev
MD
Long Island City, NY
Dr. Jill Abelseth
M.D.
Albany, NY
Dr. Sherley Abraham
M.D.
New York, NY
Dr. Jennifer Abrams
DO
Brooklyn, NY
Dr. Naim Abrar
M.D.
Riverhead, NY
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 New York 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore New York
Frequently Asked Questions
What is Gul Bahtiyar, MD, MPH's specialty? ▼
Gul Bahtiyar, MD, MPH specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Brooklyn, New York. Credentials: MD, MPH.
How much does Gul Bahtiyar, MD, MPH prescribe under Medicare Part D? ▼
In 2023, Gul Bahtiyar, MD, MPH wrote 746 Medicare Part D claims totaling $337K in drug costs for 122 beneficiaries.
Where is Gul Bahtiyar, MD, MPH located? ▼
Gul Bahtiyar, MD, MPH is located at 760 BROADWAY, Brooklyn, NY, 11206. Phone: (718) 963-8000.
What is Gul Bahtiyar, MD, MPH's NPI number? ▼
Gul Bahtiyar, MD, MPH's National Provider Identifier (NPI) is 1629378070, issued on 11/01/2010.
Does Gul Bahtiyar, MD, MPH prescribe more brand-name or generic drugs? ▼
Gul Bahtiyar, MD, MPH's prescribing is 35% brand-name and 44% generic drugs by claim count, with $310K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 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 Gul Bahtiyar, MD, MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Gul Bahtiyar, MD, MPH's most frequently prescribed drugs include Atorvastatin Calcium, Novolog Flexpen, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gul Bahtiyar, MD, MPH accept Medicare? ▼
Gul Bahtiyar, MD, MPH appears in CMS Medicare data with 746 Part D claims and 122 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gul Bahtiyar, MD, MPH's credentials? ▼
Gul Bahtiyar, MD, MPH's NPI is 1629378070 with credentials MD, MPH. 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.