2026 NPPES data Internal Medicine Physician NPI 1639638463 MD
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SHANGIDA AHSAN, MD

Internal Medicine Physician in DOWNEY, 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
476
Medicare Part D claims · 184 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: SHANGIDA AHSAN, MD is a Internal Medicine Physician ([object Object]) practicing in DOWNEY, California with a Medicare Part D prescribing footprint of 476 claims across 184 beneficiaries — 15% brand-name prescribing .

What stands out: SHANGIDA AHSAN, MD filed 476 Medicare Part D claims in 2023 across DOWNEY, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SHANGIDA AHSAN, 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).

SHANGIDA AHSAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/19/2019

NPI 1639638463

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

476 82% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in California

How Internal Medicine Physician compares to other specialties among California providers

California providers

Internal Medicine Physician share within California

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

Specialty board-certification context

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

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

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

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

SHANGIDA AHSAN, MD is a Internal Medicine Physician provider practicing in DOWNEY, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1639638463. 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.

SHANGIDA AHSAN, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 10441 LAKEWOOD BLVD, DOWNEY, CA, 90241, with a listed phone of (562) 869-1089. NPI 1639638463 was issued on 03/19/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AHSAN 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 476 prescription claims written by this provider, covering 184 Medicare beneficiaries and totaling roughly $48K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 3.6%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

10441 LAKEWOOD BLVD
DOWNEY, CA 90241

Provider Details

NPI 1639638463
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 03/19/2019

Hospital and facility affiliations

Facilities where SHANGIDA AHSAN, 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.

HEALTHCARE PARTNERS AFFILIATES MEDICAL GROUP
DOWNEY, CA

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 SHANGIDA AHSAN, MD. To verify SHANGIDA AHSAN, 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

SHANGIDA AHSAN, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 476 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.

476
Total Claims
$48K
Total Drug Cost
184
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
513
Total Day Supply
11,671
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$37K
Generic Drug Cost
$10K
Opioid Claims
17 (3.6% rate)
Antibiotic Claims
88

Patient Demographics

Average Patient Age
75.6 years
Avg HCC Risk Score
2.76
Gender Split
44% female / 56% male
Age Distribution
<65: 19, 65-74: 69, 75-84: 54, 85+: 42

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Furosemide
37
Eliquis
Apixaban
25
Atorvastatin Calcium
19
Prednisone
19
Levofloxacin
18
Pantoprazole Sodium
17
Amiodarone Hcl
13
Cephalexin
13
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
13
Cefpodoxime Proxetil
12

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

Internal Medicine Physician Overview

How SHANGIDA AHSAN, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

SHANGIDA AHSAN, MD's 476 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in California

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

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

Frequently Asked Questions

What is SHANGIDA AHSAN, MD's specialty?
SHANGIDA AHSAN, MD specializes in Internal Medicine Physician and practices in DOWNEY, California. Credentials: MD.
How much does SHANGIDA AHSAN, MD prescribe under Medicare Part D?
In 2023, SHANGIDA AHSAN, MD wrote 476 Medicare Part D claims totaling $48K in drug costs for 184 beneficiaries.
Where is SHANGIDA AHSAN, MD located?
SHANGIDA AHSAN, MD is located at 10441 LAKEWOOD BLVD, DOWNEY, CA, 90241. Phone: (562) 869-1089.
What is SHANGIDA AHSAN, MD's NPI number?
SHANGIDA AHSAN, MD's National Provider Identifier (NPI) is 1639638463, issued on 03/19/2019.
Does SHANGIDA AHSAN, MD prescribe more brand-name or generic drugs?
SHANGIDA AHSAN, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $37K in brand drug costs.
Does SHANGIDA AHSAN, MD prescribe opioids?
Yes, SHANGIDA AHSAN, MD had 17 opioid claims in 2023 with an opioid prescribing rate of 3.6%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does SHANGIDA AHSAN, MD prescribe most often?
Based on 2023 Medicare Part D data, SHANGIDA AHSAN, MD's most frequently prescribed drugs include Furosemide, Eliquis, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHANGIDA AHSAN, MD accept Medicare?
SHANGIDA AHSAN, MD appears in CMS Medicare data with 476 Part D claims and 184 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHANGIDA AHSAN, MD's credentials?
SHANGIDA AHSAN, MD's NPI is 1639638463 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