Jason Jeffery, M.D.
NPI 1427293836 · Internal Medicine Physician · Sonora, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Jeffery, M.D. is a Internal Medicine Physician provider in Sonora, CA (NPI 1427293836).
Provider details
- NPI number
- 1427293836
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A106462 (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
17 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
3,317 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,524 | $96 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,009 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 246 | $65 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 111 | $142 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 95 | $65 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 147 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 571 | 160 |
| Levothyroxine Sodium | 359 | 79 |
| Losartan Potassium | 292 | 81 |
| Amlodipine Besylate | 282 | 90 |
| Lisinopril | 268 | 80 |
| Gabapentin | 254 | 72 |
| Potassium Chloride | 243 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-12-14
- Last updated
- 2019-07-23
Frequently asked questions
- What is Jason Jeffery's NPI number?
- Jason Jeffery's National Provider Identifier (NPI) is 1427293836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Jeffery's specialty?
- Jason Jeffery is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Jeffery located?
- Jason Jeffery's practice location on file with NPPES is 690 Guzzi Ln Ste B, Sonora, CA 95370-5292.
- What is Jason Jeffery's phone number?
- The practice phone number listed in the NPPES registry for Jason Jeffery is (209) 536-5060.
- Does Jason Jeffery accept Medicare?
- Jason Jeffery is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Jeffery's NPI active?
- Yes — Jason Jeffery's NPI (1427293836) is active in the NPPES registry as of the last update on 2019-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.