Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1699389080 Individual Practitioner Female Practitioner

Calla Myerjack

Physician Assistant • San Leandro, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Calla Myerjack is a certified Physician Assistant practicing in San Leandro, CA. With approximately 6 years of clinical experience since graduating from Rutgers New Jersey Medical School in 2020, Calla Myerjack delivers high-quality medical care to the local community at 201 DOLORES AVE.

Calla Myerjack accepts Medicare assignment.

Frequently performed procedures and clinical services include emergency department visit for life threatening or functioning severity, emergency department visit with moderate level of medical decision making, emergency department visit with low level of medical decision making. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

201 Dolores Ave

San Leandro, CA 945775007

Telephone 5102408962
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Rutgers New Jersey Medical School

Graduation Year

2020

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in San Leandro, CA

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
6 Yrs -2.7 yrs vs City Avg
City Avg: 8.7 Yrs
State Avg: 11.5 Yrs
Regional Practice Density
35 Specialists

Practicing in San Leandro, CA (14617 Statewide)

Telehealth Adoption Rate
5.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
65.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Myerjack (6 Years) 6 Yrs
San Leandro Specialty Average (8.7 Years) 8.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity
56 56 $506.00 $174.85
99284 Emergency department visit with moderate level of medical decision making
41 39 $343.00 $120.61

Medical Specialties & State Licenses

CMS Verified: 2026-04-24
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License CA PA67962

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.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

5 Associated Practitioners
Moses Britt , NP

Nurse Practitioner

NPI 1134931330

Nurse Practitioner

Dr. Jeffrey Klausner , MD

Internal Medicine - Infectious Disease

NPI 1508973249

Doctor of Medicine (M.D.)

Sean Parkin , PA-C

Physician Assistant

NPI 1568686020

Physician Assistant (Certified)

Danielle Shanahan , PA-C

Physician Assistant

NPI 1659977676

Physician Assistant (Certified)

Emily Choi , PA-C

Physician Assistant

NPI 1750920609

Physician Assistant (Certified)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

10 Historical Events
📍
Updated Practice Location April 24, 2026

Registered at 201 DOLORES AVE, SAN LEANDRO, CA 945775007 (Tel: 5102408962)

📍
Updated Business Mailing Address April 24, 2026

Registered at 1942 RUSSELL ST APT D, BERKELEY, CA 947032255 (Tel: 5514047066)

👤
Provider Name / Credentials Updated April 24, 2026

Recorded as CALLA MYERJACK

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 24, 2026

Physician Assistant (License #PA67962 in CA)

NPI Profile Active September 11, 2020

NPI status registered as active in NPPES database

📍
Updated Practice Location September 11, 2020

Registered at 120 ELMORA AVE, ELIZABETH, NJ 072021625 (Tel: 9089941500)

📍
Updated Business Mailing Address September 11, 2020

Registered at 276 PINELLI DR, PISCATAWAY, NJ 088542262 (Tel: 2016691659)

👤
Provider Name / Credentials Updated September 11, 2020

Recorded as CHRISTOPHER MYERJACK

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 11, 2020

Physician Assistant (License #25MP00570900 in NJ)

🟢
Initial NPI Registration & Enumeration September 02, 2020

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1699389080
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 02, 2020
Last Update: April 24, 2026
Sole Proprietor: No

Mailing Address

1942 Russell St Apt D

Berkeley, CA 947032255

Phone: 5514047066

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.