John Kronick, M.D.
NPI 1639129034 · Orthopaedic Surgery Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Kronick, M.D. is a Orthopaedic Surgery Physician provider in Walnut Creek, CA (NPI 1639129034).
Provider details
- NPI number
- 1639129034
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G79932 (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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,805 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 | 493 | $152 |
| X-Ray of Knee, 3 Views73562 | 411 | $54 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 138 | $108 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 115 | $86 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 111 | $211 |
| X-Ray of Hip, 2-3 Views73502 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 123 | 72 |
| Celecoxib | 73 | 49 |
| Gabapentin | 55 | 46 |
| Tramadol Hcl | 42 | 32 |
| Cyclobenzaprine Hcl | 33 | 30 |
| Ibuprofen | 30 | 15 |
| Cephalexin | 30 | 21 |
| Clindamycin Hcl | 27 | 16 |
Practice location
Mailing address
Additional practice locations (1)
- 101 Sand Creek Rd Ste aBrentwood, CA 94513-2539Phone: (925) 939-8585
Registry dates
- Enumerated
- 2006-05-10
- Last updated
- 2025-11-12
- Certified
- 2025-11-12
Frequently asked questions
- What is John Kronick's NPI number?
- John Kronick's National Provider Identifier (NPI) is 1639129034, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kronick's specialty?
- John Kronick is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Kronick located?
- John Kronick's practice location on file with NPPES is 2625 Shadelands Dr, Walnut Creek, CA 94598-2512.
- What is John Kronick's phone number?
- The practice phone number listed in the NPPES registry for John Kronick is (925) 939-8585.
- Does John Kronick accept Medicare?
- John Kronick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Kronick's NPI active?
- Yes — John Kronick's NPI (1639129034) is active in the NPPES registry as of the last update on 2025-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.