NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1043476625 M.D.
Verify on CMS → Lalitha Subramanyam, M.D.
Endocrinology, Diabetes & Metabolism Physician in Irving, Texas.
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
3K
Medicare Part D claims · 344 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
43%
generic claims · 50% 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
Lalitha Subramanyam, M.D. filed 3,111 Medicare Part D claims in 2023 as an Endocrinology, Diabetes & Metabolism Physician in Irving, Texas, prescribing 43% generic.
- 3K
- Part D claims, 2023
- 43%
- generic prescribing
- ≥89th
- 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.
Lalitha Subramanyam, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,111 ≥ 89th percentile 89% 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)
Lalitha Subramanyam, 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 Lalitha Subramanyam, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
3,111 18% vs specialty avg
Specialty distribution in Texas
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Texas 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).
Lalitha Subramanyam, M.D. appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 2021 N MACARTHUR BLVD, Irving, TX, 75061, with a listed phone of (972) 259-3282. NPI 1043476625 was issued on 08/02/2008.
Medicare Part D records for calendar year 2023 show 3,111 prescription claims written by this provider, covering 344 Medicare beneficiaries and totaling roughly $1.8 million in drug spend, split 50% brand-name and 43% 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 | 1043476625 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 08/02/2008 |
License & disciplinary context - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Lalitha Subramanyam, M.D.. To verify Lalitha Subramanyam, M.D.'s current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Lalitha Subramanyam, M.D. - brand share 50.0%
Endocrinology, Diabetes & Metabolism Physician average
50% brand-name claims vs 43% generic, on 3,111 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.
3,111
Total Claims
$1.8M
Total Drug Cost
344
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,243
- Total Day Supply
- 215,052
- Brand vs Generic
- 50% brand / 43% generic
- Brand Drug Cost
- $1.7M
- Generic Drug Cost
- $29K
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 1.56
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 33, 65-74: 197, 75-84: 98, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Lalitha Subramanyam, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
308 claims
- Ozempic
Ozempic
205 claims
- Metformin Hcl Er
Metformin Hcl Er
179 claims
- Trulicity 123
Trulicity
123 claims
- Metformin Hcl 101
Metformin Hcl
101 claims
- Humalog Kwikpen U-… 78
Humalog Kwikpen U-100
78 claims
- Novolog Flexpen 74
Novolog Flexpen
74 claims
- Glimepiride 71
Glimepiride
71 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 308 |
| Ozempic Semaglutide | 205 |
| Metformin Hcl Er Metformin Hcl | 179 |
| Trulicity Dulaglutide | 123 |
| Metformin Hcl | 101 |
| Humalog Kwikpen U-100 Insulin Lispro | 78 |
| Novolog Flexpen Insulin Aspart | 74 |
| Glimepiride | 71 |
| Jardiance Empagliflozin | 71 |
| Rosuvastatin Calcium | 70 |
* 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 TX →
All providers in Texas →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Lalitha Subramanyam, M.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
Lalitha Subramanyam, M.D.'s 3,111 claims are above the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Subramanyam.
Dr. Nicola Abate
MD
Baytown, TX
Dr. Jessica Abramowitz
MD
Dallas, TX
Dr. Layla Abushamat
M.D., M.P.H.
Houston, TX
Dr. Luis Acosta
MD
Houston, TX
Dr. Stefanie Addington
M.D.
Frisco, TX
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 Texas 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 Lalitha Subramanyam, M.D.'s specialty? ▼
Lalitha Subramanyam, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Irving, Texas. Credentials: M.D..
How much does Lalitha Subramanyam, M.D. prescribe under Medicare Part D? ▼
In 2023, Lalitha Subramanyam, M.D. wrote 3,111 Medicare Part D claims totaling $1.8M in drug costs for 344 beneficiaries.
Where is Lalitha Subramanyam, M.D. located? ▼
Lalitha Subramanyam, M.D. is located at 2021 N MACARTHUR BLVD, Irving, TX, 75061. Phone: (972) 259-3282.
What is Lalitha Subramanyam, M.D.'s NPI number? ▼
Lalitha Subramanyam, M.D.'s National Provider Identifier (NPI) is 1043476625, issued on 08/02/2008.
Does Lalitha Subramanyam, M.D. prescribe more brand-name or generic drugs? ▼
Lalitha Subramanyam, M.D.'s prescribing is 50% brand-name and 43% generic drugs by claim count, with $1.7M 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 Lalitha Subramanyam, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Lalitha Subramanyam, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Lalitha Subramanyam, M.D. accept Medicare? ▼
Lalitha Subramanyam, M.D. appears in CMS Medicare data with 3,111 Part D claims and 344 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lalitha Subramanyam, M.D.'s credentials? ▼
Lalitha Subramanyam, M.D.'s NPI is 1043476625 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
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.