Shyamsundar Rajan, MD
NPI 1093730442 · Geriatric Medicine (Internal Medicine) Physician · Silver Spring, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shyamsundar Rajan, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Silver Spring, MD (NPI 1093730442).
Provider details
- NPI number
- 1093730442
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- D53367 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
828 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 420 | $108 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 139 | $150 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 137 | $38 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 56 | $191 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 53 | $135 |
| Transitional Care Management Services for Problem of High Complexity |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 341 | 92 |
| Atorvastatin Calcium | 335 | 69 |
| Losartan Potassium | 310 | 79 |
| Metoprolol Succinate | 148 | 40 |
| Mirtazapine | 144 | 33 |
| Metformin Hcl | 133 | 30 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$361 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2019-06-17
Frequently asked questions
- What is Shyamsundar Rajan's NPI number?
- Shyamsundar Rajan's National Provider Identifier (NPI) is 1093730442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shyamsundar Rajan's specialty?
- Shyamsundar Rajan is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Shyamsundar Rajan located?
- Shyamsundar Rajan's practice location on file with NPPES is 9801 Georgia Ave, Silver Spring, MD 20902-5276.
- What is Shyamsundar Rajan's phone number?
- The practice phone number listed in the NPPES registry for Shyamsundar Rajan is (301) 754-1555.
- Does Shyamsundar Rajan accept Medicare?
- Shyamsundar Rajan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shyamsundar Rajan's NPI active?
- Yes — Shyamsundar Rajan's NPI (1093730442) is active in the NPPES registry as of the last update on 2019-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.