2026 NPPES data Rheumatology Physician NPI 1437461290 MD
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NIVEDITA NAGAM, MD

Rheumatology Physician in CHESTERFIELD, Missouri. 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
749
Medicare Part D claims · 161 beneficiaries · Rheumatology Physician avg: 2K
Industry payments
$2.0K
93 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

NIVEDITA NAGAM, MD filed 749 Medicare Part D claims in 2023 as a Rheumatology Physician in CHESTERFIELD, Missouri.

749
Part D claims, 2023
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.

NIVEDITA NAGAM, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

749 Top 29% higher than 71% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 certification likely (heuristic — not verified)

NIVEDITA NAGAM, MD 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 NIVEDITA NAGAM, MD?

Quality data not reported

NPI registry status

Active

Issued 07/09/2010

NPI 1437461290

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

749 64% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Missouri

How Rheumatology Physician compares to other specialties among Missouri providers

Missouri providers

Rheumatology Physician share within Missouri

1. Rheumatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Rheumatology Physician share within Missouri

Specialty board-certification context

Estimated specialty board-certified rate — Rheumatology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Rheumatology Physician ABMS/AOA estimate

Est. board-certified rate (Rheumatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Rheumatology Physician) — ABMS / AOA estimate

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).

NIVEDITA NAGAM, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 16216 BAXTER RD STE 390, CHESTERFIELD, MO, 63017, with a listed phone of (314) 270-0365. NPI 1437461290 was issued on 07/09/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NAGAM 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 749 prescription claims written by this provider, covering 161 Medicare beneficiaries and totaling roughly $564K in drug spend. 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.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

16216 BAXTER RD STE 390
CHESTERFIELD, MO 63017

Provider Details

NPI 1437461290
Specialty Rheumatology Physician
Credentials MD
Gender Female
NPI Issued 07/09/2010

Hospital and facility affiliations

Facilities where NIVEDITA NAGAM, 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.

ST LOUIS MEDICAL ASSOCIATES LLC
POPLAR BLUFF, MO

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

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 NIVEDITA NAGAM, MD. Source: openpaymentsdata.cms.gov.

Total received

$2.0K

Largest payer

Amgen 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

749
Total Claims
$564K
Total Drug Cost
161
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,308
Total Day Supply
38,194
Generic Drug Cost
$22K

Patient Demographics

Average Patient Age
68.9 years
Avg HCC Risk Score
1.76
Gender Split
76% female / 24% male
Age Distribution
<65: 40, 65-74: 81, 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 NIVEDITA NAGAM, 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
Hydroxychloroquine Sulfate
115
Methotrexate
Methotrexate Sodium
111
Prednisone
67
Sulfasalazine
52
Leflunomide
44
Sulfasalazine Dr
Sulfasalazine
32
Azathioprine
28
Folic Acid
28
Duloxetine Hcl
24
Enbrel Sureclick
Etanercept
23

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

Rheumatology Physician Overview

How NIVEDITA NAGAM, MD fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

NIVEDITA NAGAM, MD's 749 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Missouri

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

Compare Rheumatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NIVEDITA NAGAM, MD's specialty?
NIVEDITA NAGAM, MD specializes in Rheumatology Physician and practices in CHESTERFIELD, Missouri. Credentials: MD.
How much does NIVEDITA NAGAM, MD prescribe under Medicare Part D?
In 2023, NIVEDITA NAGAM, MD wrote 749 Medicare Part D claims totaling $564K in drug costs for 161 beneficiaries.
Where is NIVEDITA NAGAM, MD located?
NIVEDITA NAGAM, MD is located at 16216 BAXTER RD STE 390, CHESTERFIELD, MO, 63017. Phone: (314) 270-0365.
What is NIVEDITA NAGAM, MD's NPI number?
NIVEDITA NAGAM, MD's National Provider Identifier (NPI) is 1437461290, issued on 07/09/2010.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does NIVEDITA NAGAM, MD prescribe most often?
Based on 2023 Medicare Part D data, NIVEDITA NAGAM, MD's most frequently prescribed drugs include Hydroxychloroquine Sulfate, Methotrexate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NIVEDITA NAGAM, MD accept Medicare?
NIVEDITA NAGAM, MD appears in CMS Medicare data with 749 Part D claims and 161 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NIVEDITA NAGAM, MD's credentials?
NIVEDITA NAGAM, MD's NPI is 1437461290 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.
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