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COLLEEN GERG RDN
NPI 1437642238
Dietitian, Registered in Bryn Mawr, PA

Active since June 07, 2018
800 LAFAYETTE RD, BRYN MAWR, PA 19010(202) 497-4202 Get Directions Write a Review

NPPES record last updated: January 30, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Colleen Gerg Rdn NPPES

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

COLLEEN GERG RDN (NPI 1437642238) is an individual dietitian, registered in Bryn Mawr, Pennsylvania, licensed in Pennsylvania (DN004713) and active in the NPI registry since June 2018. She is a graduate of Other (1995).

NPPES Registry Identity

NPI1437642238
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameCOLLEEN GERGCredential: RDN
Location Address800 LAFAYETTE RDBryn Mawr, PA 19010-1817
Mailing Address800 Lafayette RdBryn Mawr, PA 19010-1817 · (202) 497-4202
Phone(202) 497-4202
Sole ProprietorYes
Medical School CMSOtherGraduated 1995
Enumeration DateJune 7, 2018
Last NPPES UpdateJanuary 30, 2020
✔ NPI 1437642238 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in PA · DN004713
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
800 LAFAYETTE RD, Bryn Mawr, PA 19010
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Other Identifiers 1

Medicaid103610679PA

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Colleen Gerg Rdn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4183979875
PECOS Enrollment IDI20180621000041

Medicare Billing Reassignments

2

Medicare enrollment records show Colleen Gerg reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Simplex Health
9.1 mi
Dietitian, Registered
300 BROOKSIDE AVE STE 125
Ambler, PA 19002
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 38 clinicians in this Medicare group
NPI 1598137218 (484) 416-4243
Diamond Nutrition Counseling, Inc
16 mi
Dietitian, Registered
3 CREEK PKWY # 100
Upper Chichester, PA 19061
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 17 clinicians in this Medicare group
NPI 1437794310 (800) 223-4376

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Therapy procedure reassessment for nutrition management, each 15 minutes 97803
This is a process where a healthcare professional reviews your nutritional needs every 15 minutes. It's part of managing your diet to ensure optimal health. The review may involve adjusting your meal plans, evaluating your body's response to certain foods, and monitoring your overall nutrition status.
75 services15 patients

Other Providers at the Same Location NPPES

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

COLLEEN GERG, MA, RDN
Point of Service
800 LAFAYETTE RD
BRYN MAWR, PA 19010
Delaware County (202) 497-4202

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 Colleen Gerg's NPI number?

The NPI number for Colleen Gerg is 1437642238. It was assigned to this individual provider in the NPPES registry on June 7, 2018.

Where is Colleen Gerg located?

Colleen Gerg practices at 800 Lafayette Rd, Bryn Mawr, PA 19010. The listed phone number is (202) 497-4202.

What is Colleen Gerg's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Colleen Gerg enrolled in Medicare?

Yes. Colleen Gerg is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Colleen Gerg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Colleen Gerg reassigns Medicare benefits to 2 organizations: Simplex Health (Ambler, PA) and Diamond Nutrition Counseling, Inc (Upper Chichester, PA). Each 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 Colleen Gerg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Colleen Gerg accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Colleen Gerg 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 Colleen Gerg was last updated on January 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.