Zachary Lee Nichols, DO
Internal Medicine Physician · Sonora, CA
Zachary Lee Nichols, DO is an internal medicine physician with a practice address in Sonora, California, and NPI 1538658752, issued on May 2, 2018. Check the license (California 20A18909, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Zachary Lee Nichols
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A18909 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Greenley RD, Sonora, CA 95370
- Phone
- (209) 536-5000
- Enumerated
- May 2, 2018
- Record last updated
- Jun 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210723003347); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1000 Greenley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Zachary Lee Nichols in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A18909Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
531 Medicare Part D claims for 225 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 50 claims were for opioids.
Most prescribed
- Azithromycin34 claims
- Hydrocodone-Acetaminophen30 claims
- Levofloxacin26 claims
- Naloxone Hcl25 claims
- Prednisone19 claims
- Atorvastatin Calcium18 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $20.95
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Galen Inpatient Physicians PCSonora, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Lee Nichols among 17,696 internal medicine physician records in California
Zachary Lee Nichols, DO is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2018 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 internal medicine physician records list a practice address in Sonora
They are 17 of the 629 NPPES records with a practice address in Sonora, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sonora → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Allen, M.D.Sonora, CA 953701184687535
- Leslie Brocchini, MDSonora, CA 953701811966047
- Brenda Forrest, M.DSonora, CA 953701538375365
- Jason Jeffery, M.D.Sonora, CA 953701427293836
- Daniel Meador, MDSonora, CA 953701619925989
- James Mosson, M.D.Sonora, CA 953701437135670
- Daniel Phillips, M.D.Sonora, CA 953701720042732
- Maureen Regan, MDSonora, CA 953701477532273
Common questions
What is Zachary Lee Nichols, DO's NPI number?
Zachary Lee Nichols, DO's National Provider Identifier (NPI) is 1538658752, issued on May 2, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Lee Nichols, DO located?
The NPPES record lists a practice address at 1000 Greenley RD, Sonora, CA, 95370. Phone: (209) 536-5000. Providers update this record themselves, so call before visiting.
How can I verify Zachary Lee Nichols, DO's license?
NPPES lists California license number 20A18909, 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 Zachary Lee Nichols, DO prescribe under Medicare Part D?
In 2024, Zachary Lee Nichols, DO had 531 Medicare Part D claims for 225 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Zachary Lee Nichols, DO's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.