NPPES file of Aug 9, 2026

Katya Adachi Serrano, MD

Family Medicine Physician · Santa Maria, CA

Katya Adachi Serrano, MD is a family medicine physician with a practice address in Santa Maria, California, and NPI 1215227244, issued on Apr 11, 2011. Check the license (California A124695, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1215227244
Name
Katya Adachi Serrano
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A124695 CA
Self-reported in NPPES; status is on the state search
Practice location
2115 Centerpointe Pkwy, Santa Maria, CA 93455
Phone
(805) 346-7230
Enumerated
Apr 11, 2011
Record last updated
Aug 4, 2026
Medicare enrollment
Enrolled (PECOS I20170321001555); may accept Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2115 Centerpointe Pkwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eva AvilaCase Manager/Care Coordinator1447689104
  2. Ramona CabilesCommunity Health Registered Nurse1174921076
  3. Joceline Castillo-Ayala, LVNRegistered Nurse1114623279
  4. Jose Chavez, PHYSICIAN ASSISTANTPhysician Assistant1225323116
  5. Jill Cralley, RN, PHNCommunity Health Registered Nurse1700075058
  6. Robyn Freeman, RN, PHNCommunity Health Registered Nurse1417146762

Verify Katya Adachi Serrano in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A124695
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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68% fewer Medicare Part D claims than the average family medicine physician in 2024

1,142 Medicare Part D claims for 78 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Katya Adachi Serrano1,142
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium102 claims
  2. Amlodipine Besylate89 claims
  3. Metformin Hcl45 claims
  4. Losartan Potassium43 claims
  5. Jardiance31 claims
  6. Eliquis28 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $60.51

2 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katya Adachi Serrano$60.51
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Santa Barbara County AuditorSanta Barbara, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katya Adachi Serrano among 17,133 family medicine physician records in California

Katya Adachi Serrano, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 63% of them.

  • NPI issued2011 · 63% of these records are older, 34% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2011 · median 2005 among the 10,652 with a school on file
  • Record last updated2026 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

79 family medicine physician records list a practice address in Santa Maria

They are 79 of the 3,047 NPPES records with a practice address in Santa Maria, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Ryan Allen, DOSanta Maria, CA 934551265417752
  2. Jennifer Bobell, MDSanta Maria, CA 934551790754489
  3. Steve Clarke, M.D.Santa Maria, CA 934551861519415
  4. Michael Haverty, MDSanta Maria, CA 934551235114729
  5. Donald Hole, M.D.Santa Maria, CA 934551174671812
  6. Peter Krause, MDSanta Maria, CA 934551073534442
  7. David Mizes, MDSanta Maria, CA 934551629094230
  8. Robert Okerblom, M.D.Santa Maria, CA 934551942358643

Common questions

What is Katya Adachi Serrano, MD's NPI number?

Katya Adachi Serrano, MD's National Provider Identifier (NPI) is 1215227244, issued on Apr 11, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Katya Adachi Serrano, MD located?

The NPPES record lists a practice address at 2115 Centerpointe Pkwy, Santa Maria, CA, 93455. Phone: (805) 346-7230. Providers update this record themselves, so call before visiting.

How can I verify Katya Adachi Serrano, MD's license?

NPPES lists California license number A124695, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Katya Adachi Serrano, MD prescribe under Medicare Part D?

In 2024, Katya Adachi Serrano, MD had 1,142 Medicare Part D claims for 78 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.