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NICHOLAS ALLEN GREGORY MD
NPI 1740803550
Allergy & Immunology in Blue Bell, PA

Active since May 27, 2020PECOS Enrolled
470 SENTRY PKWY E STE 200, BLUE BELL, PA 19422(800) 999-1249(855) 656-7325 Get Directions Write a Review

NPPES record last updated: July 31, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 31, 2026, Jun 21, 2024, Jun 8, 2020 and 2 more (5 updates tracked since 2020).

About Nicholas Allen Gregory Md NPPES

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

NICHOLAS ALLEN GREGORY MD (NPI 1740803550) is an individual allergy & immunology provider in Blue Bell, Pennsylvania, licensed in Pennsylvania (MD496262) and active in the NPI registry since May 2020. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1740803550
Entity TypeIndividualMale
Primary Taxonomy207K00000X
Provider Legal NameNICHOLAS ALLEN GREGORYCredential: MD
Location Address470 SENTRY PKWY E STE 200Blue Bell, PA 19422-2332
Mailing Address9800 Shelbyville Rd Ste 220Louisville, KY 40223-2992 · (800) 999-1249 · Fax (855) 656-7325
Phone(800) 999-1249
Fax(855) 656-7325
Sole ProprietorNo
Enumeration DateMay 27, 2020
Last NPPES UpdateJuly 31, 20265 updates tracked since enumeration
NPPES CertifiedJuly 31, 2026
✔ NPI 1740803550 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in PA · MD496262
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
470 SENTRY PKWY E STE 200, Blue Bell, PA 19422
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Secondary Practice Locations 2

Location 13710 N Easton Rd Ste CDoylestown, PA 18902-7505 · Phone (800) 999-1249 · Fax (855) 656-7325
Location 2801 Old York Rd Ste 100Jenkintown, PA 19046-1600 · Phone (800) 999-1249 · Fax (855) 656-7325

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nicholas Allen Gregory Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Nicholas Gregory reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Psf PLLC
568 mi
Allergy & Immunology
9800 SHELBYVILLE RD, STE 220
Louisville, KY 40223
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 12 clinicians in this Medicare group
NPI 1881785947 (502) 429-8585

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 3

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

NITI AGARWAL
Allergy & Immunology
470 SENTRY PKWY E STE 200
BLUE BELL, PA 19422
Montgomery County (610) 825-5800
DR. ALLISON KELLY DO
Allergy & Immunology
470 SENTRY PKWY E STE 200
BLUE BELL, PA 19422
Montgomery County (610) 825-5800
ELIZABETH COSGROVE-BAILEY CRNP
Nurse Practitioner
470 SENTRY PKWY E STE 200
BLUE BELL, PA 19422
Montgomery County (610) 825-5800

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 Nicholas Gregory's NPI number?

The NPI number for Nicholas Gregory is 1740803550. It was assigned to this individual provider in the NPPES registry on May 27, 2020.

Where is Nicholas Gregory located?

Nicholas Gregory practices at 470 Sentry Pkwy E Ste 200, Blue Bell, PA 19422. The listed phone number is (800) 999-1249.

What is Nicholas Gregory's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Nicholas Gregory enrolled in Medicare?

Yes. Nicholas Gregory is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nicholas Gregory's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Gregory reassigns Medicare benefits to Psf PLLC (Louisville, KY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Gregory's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Gregory accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter from Meridian list Nicholas Gregory 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 Nicholas Gregory was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.