2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1851490460 MD
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MUHAMMAD AZHARUDDIN, MD

Geriatric Medicine (Internal Medicine) Physician in FESTUS, 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
378
Medicare Part D claims · 274 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MUHAMMAD AZHARUDDIN, MD is a Geriatric Medicine (Internal Medicine) Physician ([object Object]) practicing in FESTUS, Missouri with a Medicare Part D prescribing footprint of 378 claims across 274 beneficiaries — 4% brand-name prescribing .

What stands out: MUHAMMAD AZHARUDDIN, MD filed 378 Medicare Part D claims in 2023 across FESTUS, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MUHAMMAD AZHARUDDIN, MD 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).

MUHAMMAD AZHARUDDIN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 09/21/2006

NPI 1851490460

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

378 92% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

Specialty distribution in Missouri

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Missouri providers

Missouri providers

Geriatric Medicine (Internal Medicine) Physician share within Missouri

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

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Geriatric Medicine (Internal Medicine) 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).

MUHAMMAD AZHARUDDIN, MD is a Geriatric Medicine (Internal Medicine) Physician provider practicing in FESTUS, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1851490460. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MUHAMMAD AZHARUDDIN, MD appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding MD credentials at 1400 US HIGHWAY 61, FESTUS, MO, 63028, with a listed phone of (636) 933-1012. NPI 1851490460 was issued on 09/21/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AZHARUDDIN 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 378 prescription claims written by this provider, covering 274 Medicare beneficiaries and totaling roughly $6K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 27.0%. 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.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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

1400 US HIGHWAY 61
FESTUS, MO 63028

Provider Details

NPI 1851490460
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 09/21/2006

Brand vs generic prescribing mix · Generic-heavy

MUHAMMAD AZHARUDDIN, MD — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 378 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.

378
Total Claims
$6K
Total Drug Cost
274
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
388
Total Day Supply
4,353
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$3K
Generic Drug Cost
$3K
Opioid Claims
102 (27.0% rate)
Antibiotic Claims
110

Patient Demographics

Average Patient Age
70.3 years
Avg HCC Risk Score
2.05
Gender Split
58% female / 42% male
Age Distribution
<65: 59, 65-74: 114, 75-84: 76, 85+: 25

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
92
Azithromycin
40
Cephalexin
29
Prednisone
21
Ciprofloxacin Hcl
16
Amlodipine Besylate
13
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
13

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

Geriatric Medicine (Internal Medicine) Physician Overview

How MUHAMMAD AZHARUDDIN, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

MUHAMMAD AZHARUDDIN, MD's 378 claims are below the specialty average of 4,450.

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Missouri

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

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

Frequently Asked Questions

What is MUHAMMAD AZHARUDDIN, MD's specialty?
MUHAMMAD AZHARUDDIN, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in FESTUS, Missouri. Credentials: MD.
How much does MUHAMMAD AZHARUDDIN, MD prescribe under Medicare Part D?
In 2023, MUHAMMAD AZHARUDDIN, MD wrote 378 Medicare Part D claims totaling $6K in drug costs for 274 beneficiaries.
Where is MUHAMMAD AZHARUDDIN, MD located?
MUHAMMAD AZHARUDDIN, MD is located at 1400 US HIGHWAY 61, FESTUS, MO, 63028. Phone: (636) 933-1012.
What is MUHAMMAD AZHARUDDIN, MD's NPI number?
MUHAMMAD AZHARUDDIN, MD's National Provider Identifier (NPI) is 1851490460, issued on 09/21/2006.
Does MUHAMMAD AZHARUDDIN, MD prescribe more brand-name or generic drugs?
MUHAMMAD AZHARUDDIN, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $3K in brand drug costs.
Does MUHAMMAD AZHARUDDIN, MD prescribe opioids?
Yes, MUHAMMAD AZHARUDDIN, MD had 102 opioid claims in 2023 with an opioid prescribing rate of 27.0%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does MUHAMMAD AZHARUDDIN, MD prescribe most often?
Based on 2023 Medicare Part D data, MUHAMMAD AZHARUDDIN, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Azithromycin, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MUHAMMAD AZHARUDDIN, MD accept Medicare?
MUHAMMAD AZHARUDDIN, MD appears in CMS Medicare data with 378 Part D claims and 274 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MUHAMMAD AZHARUDDIN, MD's credentials?
MUHAMMAD AZHARUDDIN, MD's NPI is 1851490460 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