Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1619580461 Individual Practitioner Female Practitioner

Kellie Jean Klein , PA-C

Physician Assistant • Pasadena, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Kellie Klein, PA-C is a certified Physician Assistant practicing in Pasadena, CA. With approximately 6 years of clinical experience since completing medical education in 2020, Kellie Klein delivers high-quality medical care to the local community at 800 FAIRMOUNT AVE STE 323.

Kellie Klein is affiliated with Alpha Hormones Inc and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

800 Fairmount Ave Ste 323

Pasadena, CA 911053155

Telephone 2133344111
Fax 2133355001
Associated Practice Facility / Clinic
🏢 Alpha Hormones Inc. Facility NPI 1083237481

Medicare Profile & Education

Medical School

Other

Graduation Year

2020

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Pasadena, 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
88 Specialists

Practicing in Pasadena, CA (14617 Statewide)

Telehealth Adoption Rate
10.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Klein (6 Years) 6 Yrs
Pasadena Specialty Average (8.7 Years) 8.7 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-11-12
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License CA 64998

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.

Hospital & Practice Group Affiliations

Alpha Hormones Inc

800 Fairmount Ave, Pasadena, CA 911053155

Phone: 2133344111

Secondary Practice Locations

100 W California Blvd

Pasadena, CA 911053010

Phone: 2133344111

Practice Associates & Co-Workers

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

4 Associated Practitioners
Monikeo Williamson , FNP-BC

Nurse Practitioner - Family

NPI 1184478851

Family Nurse Practitioner (Board Certified)

Julianne Humason , FNP-BC

Nurse Practitioner - Family

NPI 1518517481

Family Nurse Practitioner (Board Certified)

Marcus Lee , NP

Nurse Practitioner - Family

NPI 1881248540

Nurse Practitioner

Dr. Rotana Tek , DO

Internal Medicine

NPI 1952665036

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

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

14 Historical Events
📍
Updated Practice Location August 23, 2025

Registered at 800 FAIRMOUNT AVE STE 323, PASADENA, CA 911053155 (Tel: 2133344111)

📍
Updated Business Mailing Address August 23, 2025

Registered at 800 FAIRMOUNT AVE STE 323, PASADENA, CA 911053155 (Tel: 2133344111)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 23, 2025

Physician Assistant (License #64998 in CA)

👤
Provider Name / Credentials Updated December 30, 2022

Recorded as KELLIE KLEIN, PA-C

📍
Updated Practice Location August 01, 2021

Registered at 8415 N PIMA RD STE 290, SCOTTSDALE, AZ 852584488 (Tel: 4804346565)

📍
Updated Practice Location September 28, 2020

Registered at 2545 W FRYE RD STE 5, CHANDLER, AZ 852246273 (Tel: 4808213600)

📍
Updated Business Mailing Address September 28, 2020

Registered at 3300 N 7TH AVE UNIT 404, PHOENIX, AZ 850134190 (Tel: 9494441359)

👤
Provider Name / Credentials Updated September 28, 2020

Recorded as KELLIE WASZAK, PA-C

NPI Profile Active August 30, 2020

NPI status registered as active in NPPES database

📍
Updated Practice Location August 30, 2020

Registered at 19555 N 59TH AVE, GLENDALE, AZ 853086813 (Tel: 6235723215)

📍
Updated Business Mailing Address August 30, 2020

Registered at 3300 N 7TH AVE UNIT 408, PHOENIX, AZ 850134190 (Tel: 9494441359)

👤
Provider Name / Credentials Updated August 30, 2020

Recorded as KELLIE WASZAK, PA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 30, 2020

Physician Assistant

🟢
Initial NPI Registration & Enumeration August 30, 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: 1619580461
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 30, 2020
Last Update: November 12, 2025
Sole Proprietor: No

Mailing Address

800 Fairmount Ave Ste 323

Pasadena, CA 911053155

Phone: 2133344111

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.