Heather Mullen, MD, MSJ
Family Medicine Physician · Santa Clarita, CA
Heather Mullen, MD, MSJ is a family medicine physician with a practice address in Santa Clarita, California, and NPI 1720185382, issued on Sep 17, 2006. Check the license (California C141514, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Heather Mullen
- Credential
- MD, MSJ
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- C141514 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27107 Tourney RD, Santa Clarita, CA 91355
- Phone
- (888) 778-5000
- Enumerated
- Sep 17, 2006
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 2306945 OH
- Medicare enrollment
- Enrolled (PECOS I20160811001459); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1999
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 27107 Tourney RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Heather Mullen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C141514Check 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 family medicine physician in 2024
608 Medicare Part D claims for 377 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 41 claims were for opioids.
Most prescribed
- Prednisone49 claims
- Doxycycline Monohydrate39 claims
- Nitrofurantoin Mono-Macro33 claims
- Cephalexin29 claims
- Meloxicam26 claims
- Azithromycin24 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupPanorama City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Heather Mullen among 17,133 family medicine physician records in California
Heather Mullen, MD, MSJ is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1999 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 family medicine physician records list a practice address in Santa Clarita
They are 31 of the 1,835 NPPES records with a practice address in Santa Clarita, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Santa Clarita → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Brian Downs, D.O.Valencia, CA 913551881795631
- Giovinetza Hasbun, M.D.Valencia, CA 913551255353496
- Michael Johnson, M.D.Valencia, CA 913551275590267
- Richard Kim, M.D.Valencia, CA 913551366427510
- Dennis Lewis, MDValencia, CA 913551780608190
- Geoffrey Lloyd, D.O.Valencia, CA 913551821104845
- Jeffrey Nordella, M.D.Valencia, CA 913551487755419
- Taura Olfus, DOValencia, CA 913551902816903
Common questions
What is Heather Mullen, MD, MSJ's NPI number?
Heather Mullen, MD, MSJ's National Provider Identifier (NPI) is 1720185382, issued on Sep 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Heather Mullen, MD, MSJ located?
The NPPES record lists a practice address at 27107 Tourney RD, Santa Clarita, CA, 91355. Phone: (888) 778-5000. Providers update this record themselves, so call before visiting.
How can I verify Heather Mullen, MD, MSJ's license?
NPPES lists California license number C141514, 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 Heather Mullen, MD, MSJ prescribe under Medicare Part D?
In 2024, Heather Mullen, MD, MSJ had 608 Medicare Part D claims for 377 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.