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

Alan S Gellerstein, MD

Individual provider Family Medicine Physician · NPI 1588695712

Alan S Gellerstein, MD is a Family Practice in Cedar Knolls, New Jersey. Graduated from Eastern Virginia Medical School in 1996, 30 years ago. Practices with Practice Associates Medical Group, a 1,403-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
30
Trained at
Eastern Virginia Medical School
Licensed in
NJ
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

11 Saddle Rd
Cedar Knolls, NJ 07927-1901
Phone: (973) 267-2122
Fax: (973) 292-1466
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 25MA06879300 (NJ)

Record details

NPI number1588695712
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 5, 2006
Last updated in NPPESJune 12, 2012
Mailing addressPo Box 416457, Boston, MA 02241-6457

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolEASTERN VIRGINIA MEDICAL SCHOOL
Graduated 1996 (30 years in practice)
Group practice Practice Associates Medical Group — 1403 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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