DR. MEGAN ANN WILLIAMSON M.D.
NPI 1851703284
Pediatrics in Philadelphia, PA

Q: What is Megan Williamson's NPI number?

The NPI number for Megan Williamson is 1851703284. It was assigned to this individual provider in the NPPES registry on May 20, 2014.

Q: What is Megan Williamson's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Megan Williamson was last updated on August 2, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since May 20, 2014PECOS Enrolled

3601 A ST, PHILADELPHIA, PA 19134(215) 427-5000 Get Directions Write a Review

NPPES record last updated: August 2, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Megan Ann Williamson M.d. NPPES

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

DR. MEGAN ANN WILLIAMSON M.D. (NPI 1851703284) is an individual pediatrics provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MT206705) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS and maintains a secondary practice location in Camden.

NPPES Registry Identity

NPI1851703284

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. MEGAN ANN WILLIAMSONCredential: M.D.

Location Address3601 A STPhiladelphia, PA 19134

Mailing Address1 Federal St Ste Sw200Camden, NJ 08103-1155 · (856) 356-4924

Phone(215) 427-5000

Sole ProprietorYes

Enumeration DateMay 20, 2014

Last NPPES UpdateAugust 2, 2018

✔ NPI 1851703284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in PA · MT206705✔ Licensed in NJ · 25MA10389400

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

3601 A ST, Philadelphia, PA 19134

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Secondary Practice Location 1

Location 13 Cooper Plz Rm 200Camden, NJ 08103-1438 · Phone (856) 342-2001

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar 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)

Dr. Megan Ann Williamson M.d. 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 Megan Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cooper Pediatrics

3.7 mi

Pediatrics

3 COOPER PLZ, SUITE 200
Camden, NJ 08103

Reassigned Medicare billing, New Jersey enrollment
45 clinicians in this Medicare group

NPI 1144268277 (856) 342-2001

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19134 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$92.69 typical visit price

range $59.88 – $180.99

Typical copayment $23.17 (range $14.97 – $45.24)

Most-billed visit code 99203

Established Patient

$105.21 typical visit price

range $19.30 – $147.29

Typical copayment $26.30 (range $4.82 – $36.82)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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. JENNIFER ELIZABETH TINGO M.D.

Pediatrics (Pediatric Cardiology)

3601 A ST, SCHC PEDIATRIC ASSOCIATES, LLC
PHILADELPHIA, PA 19134

Philadelphia County (215) 427-5000

MEGAN ELIZABETH GRESH M.D.

Orthopaedic Surgery

3601 A ST
PHILADELPHIA, PA 19134

Philadelphia County (215) 427-5000

EVAN GELLER MD

Radiology (Pediatric Radiology)

3601 A ST
PHILADELPHIA, PA 19134

Philadelphia County (215) 427-5230

VINEETHA ANN ALIAS D.O.

Pediatrics

3601 A ST
PHILADELPHIA, PA 19134

Philadelphia County (215) 427-5553

KIMBERLY BETH FULD D.O.

Pediatrics (Pediatric Endocrinology)

3601 A ST, SECTION OF ENDOCRINOLOGY
PHILADELPHIA, PA 19134

Philadelphia County (610) 564-3272

DR. MADAN MOHAN HEDE MD

Pediatrics

3601 A ST
PHILADELPHIA, PA 19134

Philadelphia County (216) 427-5170

PHILADELPHIA HEALTH AND EDUCATION CORP

Pediatrics (Adolescent Medicine)

3601 A ST, NELSON PAVILLION, 2ND FLOOR, FAMILY PLANNING
PHILADELPHIA, PA 19134

Philadelphia County (215) 427-4871

DR. YESHA HEMANT PATEL M.D.

Pediatrics

3601 A ST
PHILADELPHIA, PA 19134

Philadelphia County (215) 427-5127

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 Megan Williamson's NPI number?

The NPI number for Megan Williamson is 1851703284. It was assigned to this individual provider in the NPPES registry on May 20, 2014.

Where is Megan Williamson located?

Megan Williamson practices at 3601 A St, Philadelphia, PA 19134. The listed phone number is (215) 427-5000.

What is Megan Williamson's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Megan Williamson enrolled in Medicare?

Yes. Megan Williamson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Megan Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Megan Williamson reassigns Medicare benefits to Cooper Pediatrics (Camden, NJ). 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 Megan Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Megan Williamson accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Megan Williamson 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 Megan Williamson was last updated on August 2, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.