Subbuluxmi Natarajan, MD
NPI 1063599686 · Internal Medicine Physician · Watertown, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Subbuluxmi Natarajan, MD is a Internal Medicine Physician provider in Watertown, MA (NPI 1063599686).
Provider details
- NPI number
- 1063599686
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2000148431 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,113 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 552 | $82 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 277 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 167 | $94 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 138 | $124 |
| Hemoglobin A1c Level83036 | 108 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 104 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 332 | 101 |
| Levothyroxine Sodium | 247 | 67 |
| Lisinopril | 246 | 76 |
| Simvastatin | 150 | 43 |
| Omeprazole | 137 | 39 |
| Lorazepam | 132 | 41 |
| Amlodipine Besylate | 117 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-02-18
- Certified
- 2021-02-18
Frequently asked questions
- What is Subbuluxmi Natarajan's NPI number?
- Subbuluxmi Natarajan's National Provider Identifier (NPI) is 1063599686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Subbuluxmi Natarajan's specialty?
- Subbuluxmi Natarajan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Subbuluxmi Natarajan located?
- Subbuluxmi Natarajan's practice location on file with NPPES is 485 Arsenal St, Watertown, MA 02472-5091.
- What is Subbuluxmi Natarajan's phone number?
- The practice phone number listed in the NPPES registry for Subbuluxmi Natarajan is (617) 972-5100.
- Does Subbuluxmi Natarajan accept Medicare?
- Subbuluxmi Natarajan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Subbuluxmi Natarajan's NPI active?
- Yes — Subbuluxmi Natarajan's NPI (1063599686) is active in the NPPES registry as of the last update on 2021-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.