NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1639122633 MD
Verify on CMS → Alka Kapoor, MD
Internal Medicine Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal Medicine 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
539
Medicare Part D claims · 44 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Alka Kapoor, MD filed 539 Medicare Part D claims in 2024 as an Internal Medicine Physician in Saint Louis, Missouri, prescribing 78% generic.
- 539
- Part D claims, 2024
- 78%
- generic prescribing
- ≥65th
- 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 Alka Kapoor, MD
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 1639122633), first enumerated 05/19/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 539 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 1639122633 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1639122633
- ENUM-LEGACY 2006
- TAX-MEGA 175K Internal Medicine
- RX-LIGHT 539
- BOOK-LIGHT 3,392 in Missouri
- PHOTO-ENUM Matthew Lonergan, MD · 2006
Alka Kapoor, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
539 ≥ 65th percentile 65% 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)
Alka Kapoor, 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).
What does the federal data show about Alka Kapoor, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
539 81% vs specialty avg
Specialty distribution in Missouri
How Internal Medicine Physician compares to other specialties among Missouri 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 Internal Medicine 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 | 1639122633 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/19/2006 |
Brand vs generic prescribing mix · Typical
Alka Kapoor, MD - brand share 22.0%
Internal Medicine Physician average
22% brand-name claims vs 78% generic, on 539 2024 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 2024.
539
Total Claims
$49K
Total Drug Cost
44
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 542
- Total Day Supply
- 13,535
- Brand vs Generic
- 22% brand / 78% generic
- Brand Drug Cost
- $41K
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 85.6 years
- Avg HCC Risk Score
- 2.35
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: 23
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Alka Kapoor, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Eliquis
Eliquis
62 claims
- Donepezil Hcl
Donepezil Hcl
28 claims
- Tobramycin-Dexamet…
Tobramycin-Dexamethasone
26 claims
- Sertraline Hcl 23
Sertraline Hcl
23 claims
- Atorvastatin Calcium 22
Atorvastatin Calcium
22 claims
- Carbidopa-Levodopa 17
Carbidopa-Levodopa
17 claims
- Gabapentin 17
Gabapentin
17 claims
- Furosemide 15
Furosemide
15 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 62 |
| Donepezil Hcl | 28 |
| Tobramycin-Dexamethasone Tobramycin/Dexamethasone | 26 |
| Sertraline Hcl | 23 |
| Atorvastatin Calcium | 22 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 17 |
| Gabapentin | 17 |
| Furosemide | 15 |
| Levothyroxine Sodium | 14 |
| Potassium Chloride | 14 |
* 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 Alka Kapoor, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Alka Kapoor, MD's 539 claims are below the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Kapoor, both outside Missouri so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Kapoor.
One of 3,392 Internal Medicine Physician providers enrolled in Missouri, 5 are shown here.
Dr. Betty Abban
M.D.
Springfield, MO
Dr. Amer Abbas
MD
Saint Louis, MO
Dr. Marghoob Abbas
M.D.
St Joseph, MO
Dr. Muhammad Khalid Abbas
M.D.
Springfield, MO
Dr. Sundas Abbas
MD
Richmond Heights, MO
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alka Kapoor, MD's specialty? ▼
Alka Kapoor, MD specializes in Internal Medicine Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Alka Kapoor, MD prescribe under Medicare Part D? ▼
In 2024, Alka Kapoor, MD wrote 539 Medicare Part D claims totaling $49K in drug costs for 44 beneficiaries.
Where is Alka Kapoor, MD located? ▼
Alka Kapoor, MD is located at 1035 BELLEVUE AVE STE 305, Saint Louis, MO, 63117. Phone: (314) 925-4700.
What is Alka Kapoor, MD's NPI number? ▼
Alka Kapoor, MD's National Provider Identifier (NPI) is 1639122633, issued on 05/19/2006.
Does Alka Kapoor, MD prescribe more brand-name or generic drugs? ▼
Alka Kapoor, MD's prescribing is 22% brand-name and 78% generic drugs by claim count, with $41K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Alka Kapoor, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Alka Kapoor, MD's most frequently prescribed drugs include Eliquis, Donepezil Hcl, Tobramycin-Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alka Kapoor, MD accept Medicare? ▼
Alka Kapoor, MD appears in CMS Medicare data with 539 Part D claims and 44 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alka Kapoor, MD's credentials? ▼
Alka Kapoor, MD's NPI is 1639122633 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
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.