John Wuchenich, MD
NPI 1144549973 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Wuchenich, MD is a Internal Medicine Physician provider in Stanford, CA (NPI 1144549973).
Provider details
- NPI number
- 1144549973
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A162333 (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
16 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
348 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 | 134 | $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 | 71 | $19 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 68 | $70 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 33 | $117 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $91 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 28 | — |
| Atorvastatin Calcium | 28 | 16 |
| Gabapentin | 22 | — |
| Clonazepam | 22 | — |
| Levothyroxine Sodium | 21 | — |
| Duloxetine Hcl | 16 | — |
| Empagliflozin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-18
- Last updated
- 2024-04-24
- Certified
- 2024-04-24
Frequently asked questions
- What is John Wuchenich's NPI number?
- John Wuchenich's National Provider Identifier (NPI) is 1144549973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Wuchenich's specialty?
- John Wuchenich is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Wuchenich located?
- John Wuchenich's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is John Wuchenich's phone number?
- The practice phone number listed in the NPPES registry for John Wuchenich is (650) 723-4000.
- Does John Wuchenich accept Medicare?
- John Wuchenich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Wuchenich's NPI active?
- Yes — John Wuchenich's NPI (1144549973) is active in the NPPES registry as of the last update on 2024-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.