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

Mrs. Marsha Sigrid Dietrich-McLean, DO

Individual provider Family Medicine Physician · NPI 1003050915

Mrs. Marsha Sigrid Dietrich-McLean, DO is registered under Family Practice in Erie, Pennsylvania. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2018, 8 years ago. Practices with Regional Health Services Inc, a 576-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
8
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
PA
In the registry since
2009
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

201 State St
Erie, PA 16550-0001
Phone: (814) 877-4922
Fax: (814) 877-3622
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence OS020402 (PA)
Family Medicine Physician Taxonomy 207Q00000X · Licence OS020402 (PA)

Record details

NPI number1003050915
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 22, 2009
Last updated in NPPESJuly 1, 2022
Certification dateJuly 1, 2022

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2018 (8 years in practice)
Group practice Regional Health Services Inc — 576 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients262
Services billed 720 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Regional Health Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 576 clinicians in the practice; 12 are shown here.

Other providers in Erie