Sudharshan Parthasarathy, M.D.
NPI 1790103562 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sudharshan Parthasarathy, M.D. is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1790103562).
Provider details
- NPI number
- 1790103562
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A153411 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
527 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 264 | $145 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 244 | $193 |
| Initial Hospital Care With Same-Day Admission and Discharge With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 70 Minutes99235 | 19 | $178 |
Typical Medicare-allowed amounts for these services range $145–$193 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 2700 Grant St Ste 200Concord, CA 94520Phone: (925) 947-3312
- 1220 Rossmoor PkwyWalnut Creek, CA 94595Phone: (925) 947-3312
Registry dates
- Enumerated
- 2014-03-30
- Last updated
- 2019-05-07
Frequently asked questions
- What is Sudharshan Parthasarathy's NPI number?
- Sudharshan Parthasarathy's National Provider Identifier (NPI) is 1790103562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sudharshan Parthasarathy's specialty?
- Sudharshan Parthasarathy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sudharshan Parthasarathy located?
- Sudharshan Parthasarathy's practice location on file with NPPES is 1220 Rossmoor Pkwy, Walnut Creek, CA 94595.
- What is Sudharshan Parthasarathy's phone number?
- The practice phone number listed in the NPPES registry for Sudharshan Parthasarathy is (925) 947-3312.
- Does Sudharshan Parthasarathy accept Medicare?
- Sudharshan Parthasarathy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sudharshan Parthasarathy's NPI active?
- Yes — Sudharshan Parthasarathy's NPI (1790103562) is active in the NPPES registry as of the last update on 2019-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.