DR. STEPHEN GERARD WALSH M.D.
NPI 1205060217
Internal Medicine in Millsboro, DE

Active since May 05, 2009PECOS EnrolledAccepts Medicare Assignment
26489 CATTAIL LN, MILLSBORO, DE 19966(610) 909-3254 Get Directions Write a Review

NPPES record last updated: September 17, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 17, 2025, May 22, 2025 (2 updates tracked since 2025).

About Dr. Stephen Gerard Walsh M.d. NPPES

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

DR. STEPHEN GERARD WALSH M.D. (NPI 1205060217) is an individual internal medicine provider in Millsboro, Delaware, licensed in Delaware (C1-0009553) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS and is a graduate of Temple University School Of Medicine (2009).

NPPES Registry Identity

NPI1205060217
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. STEPHEN GERARD WALSHCredential: M.D.
Location Address26489 CATTAIL LNMillsboro, DE 19966-6737
Mailing Address921 Cherry Tree RdUpper Chichester, PA 19014-1571 · (610) 909-3254
Sole ProprietorYes
Medical School CMSTemple University School Of MedicineGraduated 2009
Enumeration DateMay 5, 2009
Last NPPES UpdateSeptember 17, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2025
✔ NPI 1205060217 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in DE · C1-0009553
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedGeneral PracticeTaxonomy 208D00000X · License C1-0009553 (DE)
26489 CATTAIL LN, Millsboro, DE 19966

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Stephen Gerard Walsh M.d. 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 ID3870801269
PECOS Enrollment IDI20250804003759
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 Reassignments

6

Medicare enrollment records show Stephen Walsh reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Clinic/Center
26489 CATTAIL LN
Millsboro, DE 19966
  • Reassigned Medicare billing, Delaware enrollment
Hospitalist
505 GREENBANK RD
Wilmington, DE 19808
  • Reassigned Medicare billing, Delaware enrollment
  • 88 clinicians in this Medicare group
Hospitalist
100 SAINT CLAIRE DR
Hockessin, DE 19707
  • Reassigned Medicare billing, Delaware enrollment
  • 85 clinicians in this Medicare group
Public Health & General Preventive Medicine
4849 RUGBY AVE
Bethesda, MD 20814
  • Reassigned Medicare billing, Delaware enrollment
Hospitalist
30 NORTH PL
Frederick, MD 21701
  • Reassigned Medicare billing, Delaware enrollment
  • 80 clinicians in this Medicare group
Urgent Care
5080 SPECTRUM DR STE 1200W
Addison, TX 75001
  • Reassigned Medicare billing, Delaware enrollment
  • Medicare enrollment name: American Current Care Of Delaware PA
  • 9 clinicians in this Medicare group

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 19966 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
$131.15 typical visit price
range $57.12 – $173.08
Typical copayment $32.78 (range $14.28 – $43.27)
Most-billed visit code 99204
Established Patient
$100.68 typical visit price
range $18.36 – $141.05
Typical copayment $25.17 (range $4.59 – $35.26)
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

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

Clinic/Center
26489 CATTAIL LN
MILLSBORO, DE 19966

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 Walsh's NPI number?

The NPI number for Stephen Walsh is 1205060217. It was assigned to this individual provider in the NPPES registry on May 5, 2009.

Where is Stephen Walsh located?

Stephen Walsh practices at 26489 Cattail Ln, Millsboro, DE 19966. The listed phone number is (610) 909-3254.

What is Stephen Walsh's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Stephen Walsh enrolled in Medicare?

Yes. Stephen Walsh 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.

Which organizations bill Medicare for Stephen Walsh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Walsh reassigns Medicare benefits to 6 organizations: SW Medical Associates PA Inc (Millsboro, DE), Delaware Post Acute Medical Services 1 (Wilmington, DE), De Pacs 2 PA (Hockessin, DE), Care Talk Health Fl PA (Bethesda, MD), Cs Pacs 3 Northeast, LLC (Frederick, MD) and 1 more organization, listed in the Medicare section above. 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 Stephen Walsh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephen Walsh accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next list Stephen Walsh 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 Stephen Walsh was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.