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CALLA MYERJACK
NPI 1699389080
Physician Assistant in San Leandro, CA

Active since September 02, 2020PECOS EnrolledAccepts Medicare Assignment
98.07/100
CMS Quality Rating
201 DOLORES AVE, SAN LEANDRO, CA 94577(510) 240-8962 Get Directions Write a Review

NPPES record last updated: April 24, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Apr 24, 2026, Sep 11, 2020, Sep 2, 2020 (3 updates tracked since 2020).

About Calla Myerjack NPPES

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

CALLA MYERJACK (NPI 1699389080) is an individual physician assistant in San Leandro, California, licensed in California (PA67962) and active in the NPI registry since September 2020. She is enrolled in Medicare PECOS and is a graduate of Rutgers New Jersey Medical School (2020).

NPPES Registry Identity

NPI1699389080
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameCALLA MYERJACK
Location Address201 DOLORES AVESan Leandro, CA 94577-5007
Mailing Address1942 Russell St Apt DBerkeley, CA 94703-2255 · (551) 404-7066
Phone(510) 240-8962
Sole ProprietorNo
Medical School CMSRutgers New Jersey Medical SchoolGraduated 2020
Enumeration DateSeptember 2, 2020
Last NPPES UpdateApril 24, 20263 updates tracked since enumeration
NPPES CertifiedApril 24, 2026
✔ NPI 1699389080 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 · PA67962
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.
201 DOLORES AVE, San Leandro, CA 94577
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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

Calla Myerjack 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 ID9931529674
PECOS Enrollment IDI20260512003918
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 2

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
56 services56 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
41 services39 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94577 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.07/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.62
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 7

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

CITY HEALTH, A MEDICAL CORPORATION
Clinic/Center (Multi-Specialty)
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (510) 971-2489
JEFFREY DAVID KLAUSNER MD
Internal Medicine (Infectious Disease)
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (510) 984-2489
SEAN PARKIN PA-C
Physician Assistant
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (510) 984-2489
DANIELLE TERESE SHANAHAN PA-C
Physician Assistant
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (510) 984-2489
MS. EMILY J CHOI PA-C
Physician Assistant
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (510) 984-2489
MRS. SHANNON RENEE GIGOUNAS MSN, RN, FNP
Nurse Practitioner (Family)
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (925) 330-5519
LAGURO, INC.
Dentist
201 DOLORES AVE
SAN LEANDRO, CA 94577
Alameda County (510) 214-2489

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 Calla Myerjack's NPI number?

The NPI number for Calla Myerjack is 1699389080. It was assigned to this individual provider in the NPPES registry on September 2, 2020.

Where is Calla Myerjack located?

Calla Myerjack practices at 201 Dolores Ave, San Leandro, CA 94577. The listed phone number is (510) 240-8962.

What is Calla Myerjack's specialty?

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

Is Calla Myerjack enrolled in Medicare?

Yes. Calla Myerjack 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 Calla Myerjack was last updated on April 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.