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

Dr. Diana Malouf Greerty

Individual provider Internal Medicine Physician · NPI 1336524230

Dr. Diana Malouf Greerty practises Internal Medicine in Baltimore, Maryland. Qualified in 2015, 11 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
11
Licensed in
MD
In the registry since
2015

Practice location Address checks out

5601 Loch Raven Blvd Dept OF
Baltimore, MD 21239-2945
Phone: (443) 444-8000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D0084355 (MD)

Record details

NPI number1336524230
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedJuly 21, 2015
Last updated in NPPESMay 20, 2021
Certification dateMay 20, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Permanente Medical Group Inc — 10941 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 patients20
Services billed 50 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Permanente Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10941 clinicians in the practice; 12 are shown here.

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