2026 NPPES data Obesity Medicine (Internal Medicine) Physician NPI 1043317340 MD
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VARALAKSHMI NIRANJAN, MD

Obesity Medicine (Internal Medicine) Physician in STANFORD, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
4K
Medicare Part D claims · 512 beneficiaries · Obesity Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.3496/100
▼ 4 pts below national avg 83.1 · [object Object]

What the federal data shows

VARALAKSHMI NIRANJAN, MD reported a CMS MIPS final score of 79.3496/100 — below the 83.1 national average — and filed 3,891 Medicare Part D claims in 2023.

79.3496/100
MIPS score · -4 vs avg
4K
Part D claims, 2023
86%
generic prescribing
Likely
board-certified (heuristic)

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.

VARALAKSHMI NIRANJAN, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

79 30th percentile higher than 30% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

VARALAKSHMI NIRANJAN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 VARALAKSHMI NIRANJAN, MD?

Near national average

NPI registry status

Active

Issued 09/20/2006

NPI 1043317340

Primary specialty

Obesity Medicine (Internal Medicine) Physician

Rare

142 US NPIs in this specialty

Medicare Part D claims

3,891 272% vs specialty avg

2023 prescription claims

Specialty avg: 1,046

MIPS final score

79.3496/100 3.750399999999999% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Obesity Medicine (Internal Medicine) Physician compares to other specialties among California providers

California providers

Obesity Medicine (Internal Medicine) Physician share within California

1. Obesity Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obesity Medicine (Internal Medicine) Physician share within California

Medicare quality performance — MIPS

VARALAKSHMI NIRANJAN, MD's 2023 MIPS final score plotted against the Obesity Medicine (Internal Medicine) Physician national average

Near national average
MIPS Final Score
79.3496/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Obesity Medicine (Internal Medicine) Physician) — 79.3496/100 vs national avg 83.1

0%100%National avg83%79.3%
MIPS final score (Obesity Medicine (Internal Medicine) Physician) — 79.3496/100 vs national avg 83.1

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).

VARALAKSHMI NIRANJAN, MD appears in the CMS NPPES registry as a Obesity Medicine (Internal Medicine) Physician provider holding MD credentials at 300 PASTEUR DR, STANFORD, CA, 94305, with a listed phone of (650) 423-4000. NPI 1043317340 was issued on 09/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NIRANJAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,891 prescription claims written by this provider, covering 512 Medicare beneficiaries and totaling roughly $537K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 1.2%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.3496/100 for the 2023 performance year (Quality 69.2231, Cost 48.0871), compared with the national average of 83.1.

Obesity Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 142 enrolled providers across 36 states and an average of 1,046 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

300 PASTEUR DR
STANFORD, CA 94305

Provider Details

NPI 1043317340
Specialty Obesity Medicine (Internal Medicine) Physician
Credentials MD
Gender Female
NPI Issued 09/20/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

79.3496
Final Score
Avg: 83.1
69.2231
Quality
48.0871
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where VARALAKSHMI NIRANJAN, MD 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.

STANFORD HEALTH CARE
★★★★★ 5/5
STANFORD, CA
Acute Care Hospitals
CMS CCN: 050441

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 VARALAKSHMI NIRANJAN, MD. To verify VARALAKSHMI NIRANJAN, MD'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 · Typical

VARALAKSHMI NIRANJAN, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 3,891 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.

3,891
Total Claims
$537K
Total Drug Cost
512
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,188
Total Day Supply
237,145
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$460K
Generic Drug Cost
$76K
Opioid Claims
47 (1.2% rate)
Antibiotic Claims
90

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.17
Gender Split
73% female / 27% male
Age Distribution
<65: 72, 65-74: 230, 75-84: 153, 85+: 57

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What VARALAKSHMI NIRANJAN, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Amlodipine Besylate
223
Atorvastatin Calcium
186
Levothyroxine Sodium
151
Rosuvastatin Calcium
150
Ozempic
Semaglutide
116
Losartan Potassium
115
Lisinopril
110
Hydrochlorothiazide
102
Metformin Hcl
101
Metoprolol Succinate
99

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Obesity Medicine (Internal Medicine) Physician Overview

How VARALAKSHMI NIRANJAN, MD fits within the Obesity Medicine (Internal Medicine) Physician landscape nationally.

142
Obesity Medicine (Internal Medicine) Physician Providers in US
36
States with Obesity Medicine (Internal Medicine) Physician
1,046
Avg Claims per Provider

VARALAKSHMI NIRANJAN, MD's 3,891 claims are above the specialty average of 1,046.

Nearby Obesity Medicine (Internal Medicine) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as NIRANJAN.

Compare Obesity Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is VARALAKSHMI NIRANJAN, MD's specialty?
VARALAKSHMI NIRANJAN, MD specializes in Obesity Medicine (Internal Medicine) Physician and practices in STANFORD, California. Credentials: MD.
How much does VARALAKSHMI NIRANJAN, MD prescribe under Medicare Part D?
In 2023, VARALAKSHMI NIRANJAN, MD wrote 3,891 Medicare Part D claims totaling $537K in drug costs for 512 beneficiaries.
What is VARALAKSHMI NIRANJAN, MD's Medicare quality score?
VARALAKSHMI NIRANJAN, MD has a CMS MIPS Final Score of 79.3496/100 (Quality: 69.2231, Cost: 48.0871). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is VARALAKSHMI NIRANJAN, MD located?
VARALAKSHMI NIRANJAN, MD is located at 300 PASTEUR DR, STANFORD, CA, 94305. Phone: (650) 423-4000.
What is VARALAKSHMI NIRANJAN, MD's NPI number?
VARALAKSHMI NIRANJAN, MD's National Provider Identifier (NPI) is 1043317340, issued on 09/20/2006.
Does VARALAKSHMI NIRANJAN, MD prescribe more brand-name or generic drugs?
VARALAKSHMI NIRANJAN, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $460K in brand drug costs.
Does VARALAKSHMI NIRANJAN, MD prescribe opioids?
Yes, VARALAKSHMI NIRANJAN, MD had 47 opioid claims in 2023 with an opioid prescribing rate of 1.2%.
How many Obesity Medicine (Internal Medicine) Physician providers are there in the US?
There are 142 Obesity Medicine (Internal Medicine) Physician providers across 36 states in the US. The average Obesity Medicine (Internal Medicine) Physician provider writes 1,046 Medicare Part D claims per year.
What drugs does VARALAKSHMI NIRANJAN, MD prescribe most often?
Based on 2023 Medicare Part D data, VARALAKSHMI NIRANJAN, MD's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does VARALAKSHMI NIRANJAN, MD accept Medicare?
VARALAKSHMI NIRANJAN, MD appears in CMS Medicare data with 3,891 Part D claims and 512 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify VARALAKSHMI NIRANJAN, MD's credentials?
VARALAKSHMI NIRANJAN, MD's NPI is 1043317340 with credentials MD. 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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