James Sharkoff, M.D.
NPI 1891893061 · Internal Medicine Physician · Stanton, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Sharkoff, M.D. is a Internal Medicine Physician provider in Stanton, CA (NPI 1891893061).
Provider details
- NPI number
- 1891893061
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A66728 (CA)
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
344 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 | 116 | $81 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 70 | $85 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 49 | $134 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 49 | $51 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $64 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 261 | 81 |
| Metformin Hcl | 187 | 59 |
| Hydrochlorothiazide | 153 | 48 |
| Atorvastatin Calcium | 142 | 57 |
| Losartan Potassium | 134 | 45 |
| Amlodipine Besylate | 124 | 43 |
| Azithromycin | 95 | 63 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2017-04-03
Frequently asked questions
- What is James Sharkoff's NPI number?
- James Sharkoff's National Provider Identifier (NPI) is 1891893061, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Sharkoff's specialty?
- James Sharkoff is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Sharkoff located?
- James Sharkoff's practice location on file with NPPES is 8045 Cerritos Ave, Stanton, CA 90680-2436.
- What is James Sharkoff's phone number?
- The practice phone number listed in the NPPES registry for James Sharkoff is (714) 828-2444.
- Does James Sharkoff accept Medicare?
- James Sharkoff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Sharkoff's NPI active?
- Yes — James Sharkoff's NPI (1891893061) is active in the NPPES registry as of the last update on 2017-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.