Andrew W. Johnson, MMS, PA-C
Medical Physician Assistant · Costa Mesa, CA
Andrew W. Johnson, MMS, PA-C is a medical physician assistant with a practice address in Costa Mesa, California, and NPI 1730778978, issued on Jan 12, 2021. Check the license (California 59223, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Andrew W. Johnson
- Credential
- MMS, PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License numbers
- 59223 CA
PA59223 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3151 Airway Ave Ste G1, Costa Mesa, CA 92626
- Phone
- (714) 545-5550
- Enumerated
- Jan 12, 2021
- Record last updated
- Jan 8, 2025
- Medicare enrollment
- Enrolled (PECOS I20210511000728); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 3151 Airway Ave Ste G1
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Deborah Du, RPA-CPsychiatric/Mental Health Clinical Nurse Specialist1992054456
- Thomas Grayden, MDPsychiatry Physician1700942117
Verify Andrew W. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 59223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average medical physician assistant in 2024
1,685 Medicare Part D claims for 102 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Trazodone Hcl129 claims
- Bupropion Xl94 claims
- Sertraline Hcl75 claims
- Quetiapine Fumarate72 claims
- Clonazepam63 claims
- Propranolol Hcl61 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.
Industry payments in 2024: $5,120.24
235 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 16,165 providers of this specialty with any payment received $1,055.00 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
- Pacific Neuropsychiatric Specialists IncCosta Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew W. Johnson among 3,376 medical physician assistant records in California
Andrew W. Johnson, MMS, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 79% of them.
- NPI issued2021 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2021 · median 2012 among the 1,347 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Costa Mesa → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Nelae Keene, PA-CCosta Mesa, CA 926261790061208
- Brandy Martinez, PA-C, CAQ-PSYCHCosta Mesa, CA 926261235875527
- Jennifer Sebastian, PA-CCosta Mesa, CA 926261942627880
- Andrea Shandling, PA-CCosta Mesa, CA 926261528481199
- Jeremy Elkins, PA-CCosta Mesa, CA 926271003961749
- Ronald Ellison, PACosta Mesa, CA 926271871501254
- Phuong Anh La, P.A.-CCosta Mesa, CA 926271891865747
- Tiffany LeCosta Mesa, CA 926271093891061
Common questions
What is Andrew W. Johnson, MMS, PA-C's NPI number?
Andrew W. Johnson, MMS, PA-C's National Provider Identifier (NPI) is 1730778978, issued on Jan 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Andrew W. Johnson, MMS, PA-C located?
The NPPES record lists a practice address at 3151 Airway Ave Ste G1, Costa Mesa, CA, 92626. Phone: (714) 545-5550. Providers update this record themselves, so call before visiting.
How can I verify Andrew W. Johnson, MMS, PA-C's license?
NPPES lists California license number 59223, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Andrew W. Johnson, MMS, PA-C prescribe under Medicare Part D?
In 2024, Andrew W. Johnson, MMS, PA-C had 1,685 Medicare Part D claims for 102 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.