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DR. HALLIE GELLER MD
NPI 1134860273
Student in an Organized Health Care Education/Training Program in Worcester, MA

Active since April 05, 2022PECOS EnrolledAccepts Medicare Assignment
100 CENTURY DR, WORCESTER, MA 01606(508) 334-1000 Get Directions Write a Review

NPPES record last updated: October 13, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Hallie Geller Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. HALLIE GELLER MD (NPI 1134860273) is an individual student in an organized health care education/training program in Worcester, Massachusetts and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1134860273
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameDR. HALLIE GELLERCredential: MD
Location Address100 CENTURY DRWorcester, MA 01606-1244
Mailing Address335 Chandler StWorcester, MA 01602-3441 · (508) 334-1000
Phone(508) 334-1000
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateApril 5, 2022
Last NPPES UpdateOctober 13, 2025
NPPES CertifiedOctober 13, 2025
✔ NPI 1134860273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License 1019892 (MA)
100 CENTURY DR, Worcester, MA 01606
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Secondary Practice Locations 3

Location 1335 Chandler StWorcester, MA 01602-3441 · Phone (508) 334-1000
Location 255 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 793-6400
Location 3680 Centre StBrockton, MA 02302-3308 · Phone (508) 941-7000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Hallie Geller Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476055690
PECOS Enrollment IDI20250908000137
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JOSHUA HAUGH DO
Psychiatry & Neurology (Psychiatry)
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 762-5400
DR. CATHRYN WILLIAMS PSY.D
Psychologist (Clinical)
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 762-6400
KARA NAYLON PSYD
Psychologist (Clinical)
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 762-5400
RACHEL E. LAMBERT FNP-BC, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 762-5400
MS. CHERYL LYNN CATOGGIO R.PH
Pharmacist
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 421-5819
URSULA SAWICKI MAKRUM PMH CNS-BC
Clinical Nurse Specialist (Psychiatric/Mental Health)
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 762-5400
DALTON T MOURAO MD
Student in an Organized Health Care Education/Training Program
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 334-1000
MELISSA L ANDERSON PH.D.
Psychologist (Clinical)
100 CENTURY DR
WORCESTER, MA 01606
Worcester County (508) 762-5400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Hallie Geller's NPI number?

The NPI number for Hallie Geller is 1134860273. It was assigned to this individual provider in the NPPES registry on April 5, 2022.

Where is Hallie Geller located?

Hallie Geller practices at 100 Century Dr, Worcester, MA 01606. The listed phone number is (508) 334-1000.

What is Hallie Geller's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Hallie Geller enrolled in Medicare?

Yes. Hallie Geller is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Hallie Geller accept?

Health plans from Harvard Pilgrim Health Care list Hallie Geller as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Hallie Geller was last updated on October 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.