NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1437127560 M.D.
Verify on CMS → Sumbul Beg, M.D.
Endocrinology, Diabetes & Metabolism Physician in Burlingame, California.
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
884
Medicare Part D claims · 139 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
37%
generic claims · 51% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$42.69
3 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
Sumbul Beg, M.D. filed 884 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Burlingame, California, prescribing 37% generic.
- 884
- Part D claims, 2023
- 37%
- generic prescribing
- $42.69
- 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.
Sumbul Beg, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
884 Top 27% higher than 73% 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)
Sumbul Beg, M.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 Sumbul Beg, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
884 67% vs specialty avg
Specialty distribution in California
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among California 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).
Sumbul Beg, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 1838 EL CAMINO REAL, Burlingame, CA, 94010, with a listed phone of (650) 504-9581. NPI 1437127560 was issued on 03/14/2006.
Medicare Part D records for calendar year 2023 show 884 prescription claims written by this provider, covering 139 Medicare beneficiaries and totaling roughly $288K in drug spend, split 51% brand-name and 37% 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 | 1437127560 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 03/14/2006 |
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 Sumbul Beg, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$43
Largest payer
Dexcom, Inc.
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 - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Sumbul Beg, M.D.. To verify Sumbul Beg, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Sumbul Beg, M.D. - brand share 51.0%
Endocrinology, Diabetes & Metabolism Physician average
51% brand-name claims vs 37% generic, on 884 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.
884
Total Claims
$288K
Total Drug Cost
139
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,917
- Total Day Supply
- 56,562
- Brand vs Generic
- 51% brand / 37% generic
- Brand Drug Cost
- $228K
- Generic Drug Cost
- $46K
Patient Demographics
- Average Patient Age
- 74.4 years
- Avg HCC Risk Score
- 1.96
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 16, 65-74: 52, 75-84: 50, 85+: 21
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sumbul Beg, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Nateglinide
Nateglinide
106 claims
- Insulin Glargine-Y…
Insulin Glargine-Yfgn
83 claims
- Metformin Hcl
Metformin Hcl
83 claims
- Levothyroxine Sodium
Levothyroxine Sodium
44 claims
- Insulin Lispro Kwi… 38
Insulin Lispro Kwikpen U-100
38 claims
- Ozempic 31
Ozempic
31 claims
- Novolog Flexpen 29
Novolog Flexpen
29 claims
- Cinacalcet Hcl 22
Cinacalcet Hcl
22 claims
| Drug | Claims |
|---|---|
| Nateglinide | 106 |
| Insulin Glargine-Yfgn | 83 |
| Metformin Hcl | 83 |
| Levothyroxine Sodium | 44 |
| Insulin Lispro Kwikpen U-100 Insulin Lispro | 38 |
| Ozempic Semaglutide | 31 |
| Novolog Flexpen Insulin Aspart | 29 |
| Cinacalcet Hcl | 22 |
| Tresiba Flextouch U-100 Insulin Degludec | 22 |
| Glipizide | 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 CA →
All providers in California →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Sumbul Beg, M.D. 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
Sumbul Beg, M.D.'s 884 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Beg.
Dr. Anita Abraham
M.D.
Stockton, CA
Dr. Sallie Adams
M.D.
Roseville, CA
Ananta Addala
Palo Alto, CA
Dr. Helen Adelberg
M.D.
Encino, CA
Dr. David Aftergood
MD
Beverly Hills, CA
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 California 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 Sumbul Beg, M.D.'s specialty? ▼
Sumbul Beg, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Burlingame, California. Credentials: M.D..
How much does Sumbul Beg, M.D. prescribe under Medicare Part D? ▼
In 2023, Sumbul Beg, M.D. wrote 884 Medicare Part D claims totaling $288K in drug costs for 139 beneficiaries.
Where is Sumbul Beg, M.D. located? ▼
Sumbul Beg, M.D. is located at 1838 EL CAMINO REAL, Burlingame, CA, 94010. Phone: (650) 504-9581.
What is Sumbul Beg, M.D.'s NPI number? ▼
Sumbul Beg, M.D.'s National Provider Identifier (NPI) is 1437127560, issued on 03/14/2006.
Does Sumbul Beg, M.D. prescribe more brand-name or generic drugs? ▼
Sumbul Beg, M.D.'s prescribing is 51% brand-name and 37% generic drugs by claim count, with $228K 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 Sumbul Beg, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Sumbul Beg, M.D.'s most frequently prescribed drugs include Nateglinide, Insulin Glargine-Yfgn, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sumbul Beg, M.D. accept Medicare? ▼
Sumbul Beg, M.D. appears in CMS Medicare data with 884 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sumbul Beg, M.D.'s credentials? ▼
Sumbul Beg, M.D.'s NPI is 1437127560 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.