NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1043903891 DO
Verify on CMS → Osama Ahsan, DO
Hospitalist Physician in Rapid City, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,950 in Hospitalist 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
163
Medicare Part D claims · 69 beneficiaries · Hospitalist Physician avg: 940
What the federal data shows
Osama Ahsan, DO filed 163 Medicare Part D claims in 2024 as a Hospitalist Physician in Rapid City, South Dakota.
- 163
- Part D claims, 2024
- ≥34th
- 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.
Federal trust snapshot
What official records show about Osama Ahsan, DO
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1043903891), first enumerated 05/30/2023.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 163 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1043903891 · Hospitalist Physician
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1043903891
- ENUM-RECENT 2023
- TAX-MID 18K Hospitalist Physician
- RX-LIGHT 163
- BOOK-THIN 64 in South Dakota
- PHOTO-ENUM Samuel Dowell · 2023
Osama Ahsan, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
163 ≥ 34th percentile 34% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Osama Ahsan, DO 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 Osama Ahsan, DO?
Quality data not reportedPrimary specialty
Hospitalist Physician
Medicare Part D claims
163 83% vs specialty avg
Specialty distribution in South Dakota
How Hospitalist Physician compares to other specialties among South Dakota 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 Hospitalist 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).
Practice Address
Provider Details
| NPI | 1043903891 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 05/30/2023 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
163
Total Claims
$14K
Total Drug Cost
69
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 251.267
- Total Day Supply
- 6,376
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 29
Patient Demographics
- Average Patient Age
- 74.8 years
- Avg HCC Risk Score
- 2.26
- Gender Split
- 49% female / 51% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 11 |
| Cefpodoxime Proxetil | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Osama Ahsan, DO fits within the Hospitalist Physician landscape nationally.
17,950
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
940
Avg Claims per Provider
Osama Ahsan, DO's 163 claims are below the specialty average of 940.
Nationwide Hospitalist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ahsan, both outside South Dakota so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2023)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hospitalist Physician Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Ahsan.
One of 64 Hospitalist Physician providers enrolled in South Dakota, 5 are shown here.
Dr. Colleen Achong
MD
Sioux Falls, SD
Mamoon Ahmed
Sioux Falls, SD
Dr. Mishka Ahmed
MD
Sioux Falls, SD
Dr. Mohammad Ahmed
M.D
Sioux Falls, SD
Dr. Sameer Ahmed
MD
Sioux Falls, SD
Compare Hospitalist Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Osama Ahsan, DO's specialty? ▼
Osama Ahsan, DO specializes in Hospitalist Physician and practices in Rapid City, South Dakota. Credentials: DO.
How much does Osama Ahsan, DO prescribe under Medicare Part D? ▼
In 2024, Osama Ahsan, DO wrote 163 Medicare Part D claims totaling $14K in drug costs for 69 beneficiaries.
Where is Osama Ahsan, DO located? ▼
Osama Ahsan, DO is located at 353 FAIRMONT BLVD, Rapid City, SD, 57701. Phone: (605) 755-1000.
What is Osama Ahsan, DO's NPI number? ▼
Osama Ahsan, DO's National Provider Identifier (NPI) is 1043903891, issued on 05/30/2023.
How many Hospitalist Physician providers are there in the US? ▼
There are 17,950 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 940 Medicare Part D claims per year.
What drugs does Osama Ahsan, DO prescribe most often? ▼
Based on 2024 Medicare Part D data, Osama Ahsan, DO's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Cefpodoxime Proxetil. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Osama Ahsan, DO accept Medicare? ▼
Osama Ahsan, DO appears in CMS Medicare data with 163 Part D claims and 69 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Osama Ahsan, DO's credentials? ▼
Osama Ahsan, DO's NPI is 1043903891 with credentials DO. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.