Misty Michelle Zelk, M.D.
Internal Medicine Physician · Sebastopol, CA
Misty Michelle Zelk, M.D. is an internal medicine physician with a practice address in Sebastopol, California, and NPI 1962401463, issued on Jul 18, 2005. Check the license (California C54385, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Misty Michelle Zelk
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C54385 CA
E-1505 AR
Self-reported in NPPES; status is on the state search - Practice location
- 652 Petaluma Ave, Sebastopol, CA 95472
- Phone
- (707) 823-7616
- Enumerated
- Jul 18, 2005
- Record last updated
- Mar 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 140545001 AR
- Medicare enrollment
- Enrolled (PECOS I20110808000166); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 652 Petaluma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Misty Michelle Zelk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C54385Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% more Medicare Part D claims than the average internal medicine physician in 2024
3,620 Medicare Part D claims for 194 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 83 claims were for opioids.
Most prescribed
- Levothyroxine Sodium253 claims
- Atorvastatin Calcium197 claims
- Eliquis175 claims
- Pantoprazole Sodium148 claims
- Gabapentin122 claims
- Amlodipine Besylate110 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.
Misty Michelle Zelk among 17,696 internal medicine physician records in California
Misty Michelle Zelk, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1996 · median 2004 among the 11,065 with a school on file
- Record last updated2013 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sebastopol → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daciana Iancu, MDSebastopol, CA 954721265582084
- David Almond, M.D.Redwood Valley, CA 954701295703833
- John Boyce-Smith, MDSonoma, CA 954761255925590
- S Campbell, MDSonoma, CA 954761053427989
- Guy Delorefice, M.D.Sonoma, CA 954761952426421
- Lawrence Huan, MDSonoma, CA 954761881986206
- Victor Iacovoni, M.D.Sonoma, CA 954761619985348
- Clinton Lane, M.D.Sonoma, CA 954761679564611
Common questions
What is Misty Michelle Zelk, M.D.'s NPI number?
Misty Michelle Zelk, M.D.'s National Provider Identifier (NPI) is 1962401463, issued on Jul 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Misty Michelle Zelk, M.D. located?
The NPPES record lists a practice address at 652 Petaluma Ave, Sebastopol, CA, 95472. Phone: (707) 823-7616. Providers update this record themselves, so call before visiting.
How can I verify Misty Michelle Zelk, M.D.'s license?
NPPES lists California license number C54385, 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 Misty Michelle Zelk, M.D. prescribe under Medicare Part D?
In 2024, Misty Michelle Zelk, M.D. had 3,620 Medicare Part D claims for 194 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.