Guillermo Alberto Mantilla, M.D.
Hospitalist Physician · Carmichael, CA
Guillermo Alberto Mantilla, M.D. is a hospitalist physician with a practice address in Carmichael, California, and NPI 1326234816, issued on Sep 19, 2007. Check the license (California C159709, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Guillermo Alberto Mantilla
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- C159709 CA
42647 TN
Self-reported in NPPES; status is on the state search - Practice location
- 6555 Coyle Ave Ste 280, Carmichael, CA 95608
- Phone
- (916) 536-3540
- Enumerated
- Sep 19, 2007
- Record last updated
- Feb 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (916) 536-3541
- Medicaid IDs
- 1512334 TN
7100423880 KY - Medicare enrollment
- Enrolled (PECOS I20190403001089); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 6555 Coyle Ave Ste 280
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Obai Abdullah, MDInterventional Cardiology Physician1417263450
- Ameera Ahmed, M.DInterventional Cardiology Physician1073873220
- Amer Ali, MDHospitalist Physician1699926535
- Sherry Bajwa, M.D.Hospitalist Physician1932548682
- Scott Baron, MDInterventional Cardiology Physician1215038930
- Prema Bezwada, M.D.Cardiovascular Disease Physician1609264704
Verify Guillermo Alberto Mantilla in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C159709Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Dignity Health Medical FoundationFolsom, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
29 hospitalist physician records list a practice address in Carmichael
They are 29 of the 1,440 NPPES records with a practice address in Carmichael, and 3,099 hospitalist physician records in California.
All 29 in Carmichael → All 3,099 in California → Every provider in Carmichael →
Other hospitalist physician records in California
- Zina Abbas, M.D.Chula Vista, CA1962799189
- Abdul Abdali, M.D.French Camp, CA1104319771
- Michael Abdel-Malek, MDDublin, CA1952388852
- Amr Abdelaty, MDWoodland, CA1962996348
- Anwar Abdelhadi, M.D.Orange, CA1093784191
- Farid Abdelmalak, M.D.Santa Monica, CA1912392937
- Elijah AbdelmeseehLong Beach, CA1346827631
- Homayoun Abdollahzadeh, M.D.Rancho Mirage, CA1871802454
- Wajidah Abdul-KhabirDuarte, CA1215323522
- Rizwana Abdullah, MDRoseville, CA1194899401
Common questions
What is Guillermo Alberto Mantilla, M.D.'s NPI number?
Guillermo Alberto Mantilla, M.D.'s National Provider Identifier (NPI) is 1326234816, issued on Sep 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Guillermo Alberto Mantilla, M.D. located?
The NPPES record lists a practice address at 6555 Coyle Ave Ste 280, Carmichael, CA, 95608. Phone: (916) 536-3540. Providers update this record themselves, so call before visiting.
How can I verify Guillermo Alberto Mantilla, M.D.'s license?
NPPES lists California license number C159709, 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.
What is Guillermo Alberto Mantilla, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.