Salvador Guevara, M.D.
NPI 1336427939 · Surgery Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Colorectal Surgery (proctology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Salvador Guevara, M.D. is a Surgery Physician provider in Walnut Creek, CA (NPI 1336427939).
Provider details
- NPI number
- 1336427939
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 059593 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
316 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Diagnostic Exam of Anus Using an Endoscope46600 | 70 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $104 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 36 | $128 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $136 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 30 | $192 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metronidazole | 23 | 23 |
| Tramadol Hcl | 22 | 20 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 18 | — |
| Ibuprofen | 17 | 13 |
| Ondansetron Hcl | 17 | 17 |
| Neomycin Sulfate | 16 | 16 |
| Loperamide Hclbrand: Loperamide | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25,194 across 29 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4721 Dallas Ranch RdAntioch, CA 94531-8811Phone: (925) 778-0679Fax: (925) 778-3567
Registry dates
- Enumerated
- 2011-07-30
- Last updated
- 2019-01-18
Frequently asked questions
- What is Salvador Guevara's NPI number?
- Salvador Guevara's National Provider Identifier (NPI) is 1336427939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Salvador Guevara's specialty?
- Salvador Guevara is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Salvador Guevara located?
- Salvador Guevara's practice location on file with NPPES is 3003 Oak Rd Ste 104, Walnut Creek, CA 94597.
- What is Salvador Guevara's phone number?
- The practice phone number listed in the NPPES registry for Salvador Guevara is (925) 391-2220.
- Does Salvador Guevara accept Medicare?
- Salvador Guevara is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Salvador Guevara's NPI active?
- Yes — Salvador Guevara's NPI (1336427939) is active in the NPPES registry as of the last update on 2019-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.