Margaret C. Mack, RN, MSN, FNP
Family Nurse Practitioner · Carmichael, CA
Margaret C. Mack, RN, MSN, FNP is a family nurse practitioner with a practice address in Carmichael, California, and NPI 1851714448, issued on Feb 2, 2014. Check the license (California 23158, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret C. Mack
- Credential
- RN, MSN, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 23158 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6501 Coyle Ave, Carmichael, CA 95608
- Phone
- (916) 864-5584
- Enumerated
- Feb 2, 2014
- Record last updated
- Feb 2, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 6501 Coyle Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Deepika AluruAnesthesiology Physician1750313235
- Angel AmodoLicensed Psychiatric Technician1578246021
- Rayan Apelian, MDStudent in an Organized Health Care Education/Training Program1902749575
Verify Margaret C. Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 23158Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family nurse practitioner in 2024
109 Medicare Part D claims for 44 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen18 claims
- Oxycodone Hcl12 claims
- Metoprolol Tartrate11 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.
Margaret C. Mack among 16,966 family nurse practitioner records in California
Margaret C. Mack, RN, MSN, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 27% of them.
- NPI issued2014 · 27% of these records are older, 69% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2014 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
40 family nurse practitioner records list a practice address in Carmichael
They are 40 of the 1,440 NPPES records with a practice address in Carmichael, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Carmichael → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Rachelle Allwardt, MSN, FNPCarmichael, CA 956081003046061
- Lori BowdenCarmichael, CA 956081407031651
- Kimberly Daniel, NPCarmichael, CA 956081346540077
- Kelly Ann Donnelly, FNPCarmichael, CA 956081780823526
- Curtis Jones, FNPCarmichael, CA 956081609914688
- Deanna Karlstad, NPCarmichael, CA 956081750354833
- Ashley OwlesCarmichael, CA 956081629265996
- Pamela Rosenthal, NPCarmichael, CA 956081609196625
Common questions
What is Margaret C. Mack, RN, MSN, FNP's NPI number?
Margaret C. Mack, RN, MSN, FNP's National Provider Identifier (NPI) is 1851714448, issued on Feb 2, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Margaret C. Mack, RN, MSN, FNP located?
The NPPES record lists a practice address at 6501 Coyle Ave, Carmichael, CA, 95608. Phone: (916) 864-5584. Providers update this record themselves, so call before visiting.
How can I verify Margaret C. Mack, RN, MSN, FNP's license?
NPPES lists California license number 23158, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Margaret C. Mack, RN, MSN, FNP prescribe under Medicare Part D?
In 2024, Margaret C. Mack, RN, MSN, FNP had 109 Medicare Part D claims for 44 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.