Michael Portillo, M.D.
NPI 1306235957 · Family Medicine Physician · Sonora, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Portillo, M.D. is a Family Medicine Physician provider in Sonora, CA (NPI 1306235957).
Provider details
- NPI number
- 1306235957
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A144432 (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
11 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
1,694 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 674 | $96 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 540 | $64 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 250 | $132 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 115 | $35 |
| 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 | 52 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 166 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 767 | 213 |
| Lisinopril | 531 | 146 |
| Levothyroxine Sodium | 397 | 97 |
| Amlodipine Besylate | 366 | 105 |
| Losartan Potassium | 359 | 91 |
| Omeprazole | 295 | 80 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$234 across 12 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)
- 374 W Olive AveSuite aMerced, CA 95348-3181Phone: (209) 384-5766Fax: (209) 383-4230
Registry dates
- Enumerated
- 2015-01-21
- Last updated
- 2017-12-14
Frequently asked questions
- What is Michael Portillo's NPI number?
- Michael Portillo's National Provider Identifier (NPI) is 1306235957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Portillo's specialty?
- Michael Portillo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Portillo located?
- Michael Portillo's practice location on file with NPPES is 680 Guzzi Ln Ste 106, Sonora, CA 95370-5288.
- What is Michael Portillo's phone number?
- The practice phone number listed in the NPPES registry for Michael Portillo is (209) 536-5770.
- Does Michael Portillo accept Medicare?
- Michael Portillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Portillo's NPI active?
- Yes — Michael Portillo's NPI (1306235957) is active in the NPPES registry as of the last update on 2017-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.