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THERESA CLARK RIHN MD, JD
NPI 1841974466
Pediatrics in Philadelphia, PA

Active since June 14, 2023PECOS Enrolled
3401 CIVIC CENTER BLVD, PHILADELPHIA, PA 19104(215) 590-1220 Get Directions Write a Review

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

Record update history: Apr 30, 2026, Jun 14, 2023 (2 updates tracked since 2023).

About Theresa Clark Rihn Md, Jd NPPES

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

THERESA CLARK RIHN MD, JD (NPI 1841974466) is an individual pediatrics provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MT228834) and active in the NPI registry since June 2023. She is enrolled in Medicare PECOS, maintains a secondary practice location in Rockland, and is a graduate of Other (2023).

NPPES Registry Identity

NPI1841974466
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameTHERESA CLARK RIHNCredential: MD, JD
Location Address3401 CIVIC CENTER BLVDPhiladelphia, PA 19104-4319
Mailing AddressPo Box 191Rockland, DE 19732-0191 · (412) 657-8232
Phone(215) 590-1220
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateJune 14, 2023
Last NPPES UpdateApril 30, 20262 updates tracked since enumeration
NPPES CertifiedApril 30, 2026
✔ NPI 1841974466 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in PA · MT228834
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.
3401 CIVIC CENTER BLVD, Philadelphia, PA 19104
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Secondary Practice Location 1

Location 1PO Box 191Rockland, DE 19732-0191 · Phone (412) 657-8232

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Theresa Clark Rihn Md, Jd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9537631213
PECOS Enrollment IDI20260612003783
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 Theresa Clark Rihn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Nemours Foundation
2.1 mi
Multi-Specialty
833 CHESTNUT ST STE 301
Philadelphia, PA 19107
  • Reassigned Medicare billing, Delaware enrollment
  • 526 clinicians in this Medicare group
NPI 1902959653 (215) 955-5800

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 19104 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.

AARON DORFMAN M.D.
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - CARDIOLOGY
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-4040
MS. NICOLE MARIE KOEPKE CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - EMERGENCY MED
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1944
DR. CASSANDRA ALYS LIGH MD
Surgery (Plastic and Reconstructive Surgery)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-2208
DR. PREETI SOI
Psychiatry & Neurology (Child & Adolescent Psychiatry)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-7555
ROSALIND USHER M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
3401 CIVIC CENTER BLVD, DIVISION OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-6336
DR. MATTHEW DAVID SCHREIER MD
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
DR. TERRENCE CALDWELL JR. PHARMD
Pharmacist (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
ALYSSA STIEFEL CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000

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 Theresa Clark Rihn's NPI number?

The NPI number for Theresa Clark Rihn is 1841974466. It was assigned to this individual provider in the NPPES registry on June 14, 2023.

Where is Theresa Clark Rihn located?

Theresa Clark Rihn practices at 3401 Civic Center Blvd, Philadelphia, PA 19104. The listed phone number is (215) 590-1220.

What is Theresa Clark Rihn's specialty?

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

Is Theresa Clark Rihn enrolled in Medicare?

Yes. Theresa Clark Rihn is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Theresa Clark Rihn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Clark Rihn reassigns Medicare benefits to The Nemours Foundation (Philadelphia, PA). 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 Theresa Clark Rihn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Theresa Clark Rihn accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Highmark Blue Cross Blue Shield Delaware list Theresa Clark Rihn 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 Theresa Clark Rihn was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.