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MARY CHIEN ROZELLE PA-C
NPI 1962449249
Physician Assistant in Mountain View, CA

Active since June 02, 2006PECOS Enrolled
2490 HOSPITAL DR, SUITE 201, MOUNTAIN VIEW, CA 94040(650) 962-4609 Get Directions Write a Review

NPPES record last updated: May 19, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mary Chien Rozelle Pa-c NPPES

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

MARY CHIEN ROZELLE PA-C (NPI 1962449249) is an individual physician assistant in Mountain View, California, licensed in California (PA16380) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Sacramento.

NPPES Registry Identity

NPI1962449249
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMARY CHIEN ROZELLECredential: PA-C
Location Address2490 HOSPITAL DR, SUITE 201Mountain View, CA 94040-4122
Mailing Address2490 Hospital Dr Ste 201Mountain View, CA 94040-4124 · (650) 962-4609
Phone(650) 962-4609
Sole ProprietorNo
Enumeration DateJune 2, 2006
Last NPPES UpdateMay 19, 2026
NPPES CertifiedMay 19, 2026
✔ NPI 1962449249 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 · PA16380
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.
2490 HOSPITAL DR, Mountain View, CA 94040
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Other Names 1

Former Name (1)Mary Katherine Chien Pa-c

Secondary Practice Location 1

Location 11792 Tribute Rd Ste 200Sacramento, CA 95815-4320 · Phone (916) 678-7270 · Fax (916) 514-1799

Other Identifiers 1

MedicaidPA03108CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Chien Rozelle Pa-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94040 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SAMUEL N MARCUS MD INC.
Internal Medicine (Gastroenterology)
2490 HOSPITAL DR, SUITE 211
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 988-7488
GEORGE TRIADAFILOPOULOS MD INC
Internal Medicine (Gastroenterology)
2490 HOSPITAL DR, STE. 211
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 988-7488
KATE HAISCH R.D.
Dietitian, Registered
2490 HOSPITAL DR
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 962-4200
ADVANCED CARDIOVASCULAR SPECIALISTS INC
Specialist
2490 HOSPITAL DR, SUITE 311
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 962-4690
DR. SURENDRA BABU GUDAPATI M.D.
Internal Medicine (Cardiovascular Disease)
2490 HOSPITAL DR, SUITE 104
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 962-4410
SUSAN M WRUBEL PA-C
Physician Assistant
2490 HOSPITAL DR, STE 211
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 988-7488
RAMTIN AGAH M.D.
Specialist
2490 HOSPITAL DR, SUITE 311
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 962-4690
YUSHA IKHTABAR SIDDIQUI M.D.
Internal Medicine
2490 HOSPITAL DR, SUITE 104
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 962-4410

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 Mary Rozelle's NPI number?

The NPI number for Mary Rozelle is 1962449249. It was assigned to this individual provider in the NPPES registry on June 2, 2006. The provider is also known as Mary Katherine Chien Pa-C.

Where is Mary Rozelle located?

Mary Rozelle practices at 2490 Hospital Dr Suite 201, Mountain View, CA 94040. The listed phone number is (650) 962-4609.

What is Mary Rozelle's specialty?

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

Is Mary Rozelle enrolled in Medicare?

Yes. Mary Rozelle is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Rozelle was last updated on May 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.