Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Katarzyna Twardowska, MD

Individual provider Internal Medicine Physician · NPI 1790881795

Dr. Katarzyna Twardowska, MD is an Internal Medicine in Anaheim, California. Qualified in 1989, 37 years ago. Practices with Southern California Hospitalist Network Medical Group Inc, a 75-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
37
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1801 W Romneya Dr Ste # 601B
Anaheim, CA 92801-1830
Phone: (714) 780-5695
Fax: (714) 780-5694
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A69481 (CA)

Record details

NPI number1790881795
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 16, 2006
Last updated in NPPESJuly 9, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Southern California Hospitalist Network Medical Group Inc — 75 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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