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

Jonathan D Holdorf, MD

Individual provider Internal Medicine Physician · NPI 1639339989

Jonathan D Holdorf, MD is a Pulmonary Disease in Worcester, Massachusetts. Graduated from University of Massachusetts Medical School in 2008, 18 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
18
Trained at
University of Massachusetts Medical School
Licensed in
MA
In the registry since
2008
Specialties on file
3
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

55 Lake Ave N
Worcester, MA 01655-0002
Phone: (508) 334-1975
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 157 Union St, Marlborough, MA 01752-1228 — (508) 486-5678

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 256032 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 256032 (MA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 256032 (MA)

Record details

NPI number1639339989
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2008
Last updated in NPPESJune 6, 2024
Certification dateJune 6, 2024
Mailing addressPo Box 415348, Boston, MA 02241-5348

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2008 (18 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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