Megan Johnstone Hardin, MPA, PA-C
Physician Assistant · Walnut Creek, CA
Megan Johnstone Hardin, MPA, PA-C is a physician assistant with a practice address in Walnut Creek, California, and NPI 1831411453, issued on Feb 23, 2010. Check the license (California PA20855, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Megan Johnstone Hardin
- Credential
- MPA, PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA20855 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1479 Ygnacio Valley RD, Walnut Creek, CA 94598
- Phone
- (925) 932-9389
- Enumerated
- Feb 23, 2010
- Record last updated
- Jul 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (925) 256-9066
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1479 Ygnacio Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Megan Johnstone Hardin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA20855Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average physician assistant in 2024
420 Medicare Part D claims for 153 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Mupirocin89 claims
- Ketoconazole81 claims
- Triamcinolone Acetonide51 claims
- Clindamycin Phosphate18 claims
- Dupixent Pen17 claims
- Tacrolimus17 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: $1,157.12
54 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Megan Johnstone Hardin among 14,451 physician assistant records in California
Megan Johnstone Hardin, MPA, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 27% of them.
- NPI issued2010 · 27% of these records are older, 70% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2015 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 physician assistant records list a practice address in Walnut Creek
They are 89 of the 6,170 NPPES records with a practice address in Walnut Creek, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Walnut Creek → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Carolyn Cardamone, P.A-CWalnut Creek, CA 945981639194616
- Stephanie Chin, PA-CWalnut Creek, CA 945981902936115
- Jennifer Falk, PA-CWalnut Creek, CA 945981093014110
- Heidi Heal, PA-CWalnut Creek, CA 945981912967498
- Coryn Nicholls, PA-CWalnut Creek, CA 945981487832739
- Elizabeth Oconnor, PACWalnut Creek, CA 945981356598403
- Ingrid Pampalone, PA-CWalnut Creek, CA 945981891937652
- Meetal Patel, PA-CWalnut Creek, CA 945981730286824
Common questions
What is Megan Johnstone Hardin, MPA, PA-C's NPI number?
Megan Johnstone Hardin, MPA, PA-C's National Provider Identifier (NPI) is 1831411453, issued on Feb 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Megan Johnstone Hardin, MPA, PA-C located?
The NPPES record lists a practice address at 1479 Ygnacio Valley RD, Walnut Creek, CA, 94598. Phone: (925) 932-9389. Providers update this record themselves, so call before visiting.
How can I verify Megan Johnstone Hardin, MPA, PA-C's license?
NPPES lists California license number PA20855, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Megan Johnstone Hardin, MPA, PA-C prescribe under Medicare Part D?
In 2024, Megan Johnstone Hardin, MPA, PA-C had 420 Medicare Part D claims for 153 beneficiaries; the average among physician assistant prescribers was 830. 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.