Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1699112458 Individual Practitioner Male Practitioner

Dr. Thomas Leewei Chen , MD

Internal Medicine • Oakland, CA

✓ Accepts Medicare Assignment
Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Thomas Chen, MD is a registered Internal Medicine practitioner in Oakland, CA. With approximately 13 years of clinical practice since graduating from Tulane University School Of Medicine in 2013, Dr. Chen provides healthcare services at the registered practice location at 1411 E 31ST ST.

Dr. Chen is affiliated with Permanente Medical Group Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, hospital discharge day management. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1411 E 31st St

Oakland, CA 946021018

Telephone 5104374800
Associated Practice Facility / Clinic
🏢 Oakcare Medical Group Inc Facility NPI 1801887104

Medicare Profile & Education

Medical School

Tulane University School Of Medicine

Graduation Year

2013

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Oakland, CA

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
13 Yrs -7.6 yrs vs City Avg
City Avg: 20.6 Yrs
State Avg: 26.6 Yrs
Regional Practice Density
440 Specialists

Practicing in Oakland, CA (18502 Statewide)

Telehealth Adoption Rate
13.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
44.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Chen (13 Years) 13 Yrs
Oakland Specialty Average (20.6 Years) 20.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
28 12 $159.00 $88.09

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License CA A133645

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Hospital & Practice Group Affiliations

Permanente Medical Group Inc

39400 Paseo Padre Pkwy, Fremont, CA 945382310

Phone: 5102483000

Practice Associates & Co-Workers

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

40 Associated Practitioners
Juan Casillas , NP

Nurse Practitioner - Family

NPI 1003165135

Nurse Practitioner

Brian Lundgren

Respiratory Therapist, Registered

NPI 1013392380
Sara Minahan , CNM, WHNP, RN

Nurse Practitioner - Women's Health

NPI 1013420868

Certified Nurse Midwife, Women's Health Nurse Practitioner, Registered Nurse

Theresa Buckley

Registered Nurse

NPI 1013502392
NPI 1013576644

Doctor of Medicine (M.D.)

Emily Eisenberg , PA-C

Physician Assistant - Surgical

NPI 1023596095

Physician Assistant (Certified)

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active January 09, 2015

NPI status registered as active in NPPES database

📍
Updated Practice Location January 09, 2015

Registered at 1411 E 31ST ST, OAKLAND, CA 946021018 (Tel: 5104374800)

📍
Updated Business Mailing Address January 09, 2015

Registered at 1411 E 31ST ST, OAKLAND, CA 946021018 (Tel: 5104374800)

👤
Provider Name / Credentials Updated January 09, 2015

Recorded as THOMAS CHEN, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 09, 2015

Internal Medicine (License #A133645 in CA)

🟢
Initial NPI Registration & Enumeration June 03, 2013

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: 1699112458
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 03, 2013
Last Update: February 11, 2022
Sole Proprietor: Yes

Mailing Address

1411 E 31st St

Oakland, CA 946021018

Phone: 5104374800

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.