Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Alex Mammen, MD

Individual provider Ophthalmology Physician · NPI 1508055898

Alex Mammen, MD practises Ophthalmology in Pittsburgh, Pennsylvania. Graduated from Medical College of Georgia School of Medicine in 2007, 19 years ago. Practices with University of Pittsburgh Physicians, a 4,127-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
19
Trained at
Medical College of Georgia School of Medicine
Licensed in
PA
In the registry since
2007
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

203 Lothrop St Eei 7th Fl
Pittsburgh, PA 15213-2548 Not confirmed with CMS for 15 years — call before visiting
Phone: (412) 647-2200
Fax: (412) 647-9607
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence MD442263 (PA)

Record details

NPI number1508055898
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 23, 2007
Last updated in NPPESSeptember 2, 2011

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolMEDICAL COLLEGE OF GEORGIA SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice University Of Pittsburgh Physicians — 4127 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Cataract surgery 48 times · 63rd percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients245
Services billed 741 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 University of Pittsburgh Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4127 clinicians in the practice; 12 are shown here.

Other providers in Pittsburgh