1. Home
  2. Directory
  3. Pennsylvania
  4. Lancaster
  5. Internal Medicine
  6. NPI Profile

STEPHEN IMMANUEL WARREN MD
NPI 1093277634
Internal Medicine - Cardiovascular Disease in Lancaster, PA

Active since April 03, 2019PECOS EnrolledAccepts Medicare Assignment
217 HARRISBURG AVE, LANCASTER, PA 17603(717) 544-8300(717) 544-8265 Get Directions Write a Review

NPPES record last updated: October 14, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 20, 2025, Apr 3, 2019 (2 updates tracked since 2019).

About Stephen Immanuel Warren Md NPPES

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

STEPHEN IMMANUEL WARREN MD (NPI 1093277634) is an individual cardiovascular disease provider in Lancaster, Pennsylvania, licensed in Pennsylvania (MD490691) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Lancaster General Hospital, and is a graduate of Howard University College Of Medicine (2019).

NPPES Registry Identity

NPI1093277634
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameSTEPHEN IMMANUEL WARRENCredential: MD
Location Address217 HARRISBURG AVELancaster, PA 17603-2964
Mailing Address217 Harrisburg AveLancaster, PA 17603-2964 · (717) 544-8300 · Fax (717) 544-8265
Phone(717) 544-8300
Fax(717) 544-8265
Sole ProprietorYes
Medical School CMSHoward University College Of MedicineGraduated 2019
Enumeration DateApril 3, 2019
Last NPPES UpdateOctober 14, 20252 updates tracked since enumeration
NPPES CertifiedOctober 14, 2025
✔ NPI 1093277634 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in PA · MD490691
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
217 HARRISBURG AVE, Lancaster, PA 17603
Open in Google Maps ↗

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Stephen Immanuel Warren 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 ID7012327562
PECOS Enrollment IDI20250711000368
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Lancaster General Hospital

Acute Care Hospitals · Lancaster, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390100
Location555 North Duke StreetLancaster, PA 17602 · Lancaster County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 17603 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
$126.34 typical visit price
range $54.64 – $166.87
Typical copayment $31.58 (range $13.66 – $41.71)
Most-billed visit code 99204
Established Patient
$68.36 typical visit price
range $17.33 – $135.84
Typical copayment $17.09 (range $4.33 – $33.96)
Most-billed visit code 99213
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.

MS. KIMBERLY A ANDERSEN CRNP
Nurse Practitioner (Acute Care)
217 HARRISBURG AVE, SUITE 200
LANCASTER, PA 17603
Lancaster County (717) 544-4495
DR. MELISSA LYNN MCKERNAN PULLIAM M.D.
Internal Medicine (Clinical Cardiac Electrophysiology)
217 HARRISBURG AVE, THE HEART GROUP OF LGHEALTH
LANCASTER, PA 17603
Lancaster County (717) 544-8300
DR. DANA M WEINSTEIN D.O.
Internal Medicine (Cardiovascular Disease)
217 HARRISBURG AVE, THE HEART GROUP OF LGHEALTH
LANCASTER, PA 17603
Lancaster County (717) 544-8300
JESSICA NICOLE NORTON CRNP
Nurse Practitioner (Family)
217 HARRISBURG AVE
LANCASTER, PA 17603
Lancaster County (717) 544-8300
ELENA BIGLER CRNP
Nurse Practitioner (Gerontology)
217 HARRISBURG AVE
LANCASTER, PA 17603
Lancaster County (717) 544-8300
DR. KRISTEN E WONG MD
Internal Medicine (Advanced Heart Failure and Transplant Cardiology)
217 HARRISBURG AVE
LANCASTER, PA 17603
Lancaster County (717) 544-8300
DR. EDWARD WILLIAM SUPPLE M.D.
Internal Medicine (Cardiovascular Disease)
217 HARRISBURG AVE, THE HEART GROUP, LTD.
LANCASTER, PA 17603
Lancaster County (717) 397-5484
JIAN SHAN M.D.
Internal Medicine (Cardiovascular Disease)
217 HARRISBURG AVE
LANCASTER, PA 17603
Lancaster County (717) 544-8300

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 Stephen Warren's NPI number?

The NPI number for Stephen Warren is 1093277634. It was assigned to this individual provider in the NPPES registry on April 3, 2019.

Where is Stephen Warren located?

Stephen Warren practices at 217 Harrisburg Ave, Lancaster, PA 17603. The listed phone number is (717) 544-8300.

What is Stephen Warren's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Stephen Warren enrolled in Medicare?

Yes. Stephen Warren 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 Stephen Warren accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Stephen Warren 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.

Is Stephen Warren affiliated with any hospitals?

According to CMS data, Stephen Warren is affiliated with Lancaster General Hospital.

When was this NPI record last updated?

The NPPES record for Stephen Warren was last updated on October 14, 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.