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GAIA MOHR-TONACHINI MMSC
NPI 1407542442
Physician Assistant in Walnut Creek, CA

Active since April 13, 2023PECOS EnrolledAccepts Medicare Assignment
323 LENNON LN, WALNUT CREEK, CA 94598(925) 430-5335(925) 430-5446 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 4, 2026, Apr 13, 2023 (2 updates tracked since 2023).

About Gaia Mohr-tonachini Mmsc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GAIA MOHR-TONACHINI MMSC (NPI 1407542442) is an individual physician assistant in Walnut Creek, California, licensed in California (PA67404) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS, maintains a secondary practice location in Walnut Creek, and is a graduate of Yale University School Of Medicine (2022).

NPPES Registry Identity

NPI1407542442
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameGAIA MOHR-TONACHINICredential: MMSC
Location Address323 LENNON LNWalnut Creek, CA 94598-2497
Mailing Address323 Lennon LnWalnut Creek, CA 94598-2497 · (925) 430-5335 · Fax (925) 430-5446
Phone(925) 430-5335
Fax(925) 430-5446
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 2022
Enumeration DateApril 13, 2023
Last NPPES UpdateMarch 4, 20262 updates tracked since enumeration
NPPES CertifiedMarch 4, 2026
✔ NPI 1407542442 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA67404
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
323 LENNON LN, Walnut Creek, CA 94598
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Secondary Practice Location 1

Location 11601 Ygnacio Valley RdWalnut Creek, CA 94598-3122 · Phone (925) 939-3000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gaia Mohr-tonachini Mmsc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1951763853
PECOS Enrollment IDI20230809001703, I20260204004617
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
50 services42 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
22 services22 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gaia Mohr-tonachini's NPI number?

The NPI number for Gaia Mohr-tonachini is 1407542442. It was assigned to this individual provider in the NPPES registry on April 13, 2023.

Where is Gaia Mohr-tonachini located?

Gaia Mohr-tonachini practices at 323 Lennon Ln, Walnut Creek, CA 94598. The listed phone number is (925) 430-5335.

What is Gaia Mohr-tonachini's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Gaia Mohr-tonachini enrolled in Medicare?

Yes. Gaia Mohr-tonachini is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Gaia Mohr-tonachini was last updated on March 4, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.