Gaia Mohr-Tonachini, MMSC
Physician Assistant · Walnut Creek, CA
Gaia Mohr-Tonachini, MMSC is a physician assistant with a practice address in Walnut Creek, California, and NPI 1407542442, issued on Apr 13, 2023. Check the license (California PA67404, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gaia Mohr-Tonachini
- Credential
- MMSC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA67404 CA
Self-reported in NPPES; status is on the state search - Practice location
- 323 Lennon LN, Walnut Creek, CA 94598
- Phone
- (925) 430-5335
- Enumerated
- Apr 13, 2023
- Record last updated
- Mar 4, 2026
- Fax
- (925) 430-5446
- Medicare enrollment
- Enrolled (PECOS I20230809001703); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2022
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Gaia Mohr-Tonachini in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA67404Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average physician assistant in 2024
345 Medicare Part D claims for 139 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 37 claims were for opioids.
Most prescribed
- Gabapentin86 claims
- Pregabalin44 claims
- Meloxicam33 claims
- Cyclobenzaprine Hcl30 claims
- Oxycodone Hcl30 claims
- Diazepam27 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 3 group practices
- Brandon Mccutcheon MD PCWalnut Creek, CA
- Rehabilitation Associates IncFairfield, CT
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gaia Mohr-Tonachini among 14,451 physician assistant records in California
Gaia Mohr-Tonachini, MMSC 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 2023, is newer than 80% of them.
- NPI issued2023 · 80% of these records are older, 13% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2022 · median 2018 among the 7,214 with a school on file
- Record last updated2026 · 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
- Megan Hardin, MPA, PA-CWalnut Creek, CA 945981831411453
- 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
Common questions
What is Gaia Mohr-Tonachini, MMSC's NPI number?
Gaia Mohr-Tonachini, MMSC's National Provider Identifier (NPI) is 1407542442, issued on Apr 13, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Gaia Mohr-Tonachini, MMSC located?
The NPPES record lists a practice address at 323 Lennon LN, Walnut Creek, CA, 94598. Phone: (925) 430-5335. Providers update this record themselves, so call before visiting.
How can I verify Gaia Mohr-Tonachini, MMSC's license?
NPPES lists California license number PA67404, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gaia Mohr-Tonachini, MMSC prescribe under Medicare Part D?
In 2024, Gaia Mohr-Tonachini, MMSC had 345 Medicare Part D claims for 139 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.