Alison Anne Nielsen, MD
Anesthesiology Physician · Mather, CA
Alison Anne Nielsen, MD is an anesthesiology physician with a practice address in Mather, California, and NPI 1265536213, issued on Sep 11, 2006. Check the license (California A120218, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alison Anne Nielsen
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- A120218 CA
003526 GA
Self-reported in NPPES; status is on the state search - Practice location
- 10535 Hospital Way, Mather, CA 95655
- Phone
- (916) 843-7102
- Enumerated
- Sep 11, 2006
- Record last updated
- Feb 15, 2024
- Medicare enrollment
- Enrolled (PECOS I20150330002024); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 10535 Hospital Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alison Anne Nielsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120218Check 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 practice group's MIPS final score for 2023 (Medicare payment program): 61.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Permanente Medical Group IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alison Anne Nielsen among 7,571 anesthesiology physician records in California
Alison Anne Nielsen, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2010 · median 2006 among the 4,868 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 anesthesiology physician records list a practice address in Mather
They are 4 of the 398 NPPES records with a practice address in Mather, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Mather → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Edith Bautista, MDMather, CA 956551124092358
- David Bell, M.D.Mather, CA 956551679559447
- Thomas Walter, D.O.Mather, CA 956551124255757
- Dondee Almazan, MDRoseville, CA 956611801083241
- Pauldeen DavejanRoseville, CA 956611043063969
- William Fenton, MDRoseville, CA 956611619055373
- Yury Korshkov, MDRoseville, CA 956611639243942
- Samuel Seiden, M.D.Roseville, CA 956611659568558
Common questions
What is Alison Anne Nielsen, MD's NPI number?
Alison Anne Nielsen, MD's National Provider Identifier (NPI) is 1265536213, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alison Anne Nielsen, MD located?
The NPPES record lists a practice address at 10535 Hospital Way, Mather, CA, 95655. Phone: (916) 843-7102. Providers update this record themselves, so call before visiting.
How can I verify Alison Anne Nielsen, MD's license?
NPPES lists California license number A120218, 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 Alison Anne Nielsen, MD's MIPS final score?
The 2023 MIPS final score is 61.2 of 100, reported for the practice group. 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.