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DR. WILLIAM PORTER WELBOURNE M.D.
NPI 1053309633
Internal Medicine in Geneva, NY

Active since October 08, 2005PECOS Enrolled
200 NORTH ST, SUITE 102, GENEVA, NY 14456(315) 787-5400(315) 787-5475 Get Directions Write a Review

NPPES record last updated: September 26, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. William Porter Welbourne M.d. NPPES

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

DR. WILLIAM PORTER WELBOURNE M.D. (NPI 1053309633) is an individual internal medicine provider in Geneva, New York, licensed in New York (119889) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1053309633
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM PORTER WELBOURNECredential: M.D.
Location Address200 NORTH ST, SUITE 102Geneva, NY 14456-1561
Mailing Address200 North St, Suite 102Geneva, NY 14456 · (315) 787-5400 · Fax (315) 787-5475
Phone(315) 787-5400
Fax(315) 787-5475
Sole ProprietorNo
Enumeration DateOctober 8, 2005
Last NPPES UpdateSeptember 26, 2014
✔ NPI 1053309633 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 119889
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.
200 NORTH ST, Geneva, NY 14456
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Other Identifiers 4

Medicare UPINB71774NY
Medicare ID-Type Unspecified10262BNY
Medicaid00447049NY
OtherP010119889NY · Excellus

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Porter Welbourne 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 William Welbourne reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Flh Medical, PC
1.5 mi
Gastroenterology
821 PRE EMPTION RD, STE. 300
Geneva, NY 14456
  • Reassigned Medicare billing, New York enrollment
  • 129 clinicians in this Medicare group
NPI 1164766325 (315) 787-5310

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 14456 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
$126.40 typical visit price
range $54.87 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
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.

STEPHEN ACHILLES MD
Obstetrics & Gynecology
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5100
NORTH STREET PHARMACY INC
Pharmacy (Community/Retail Pharmacy)
200 NORTH ST, ST 103
GENEVA, NY 14456
Ontario County (315) 787-5388
RICHARD KASULKE MD
Urology
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5100
TRACY HEFFRON PA
Physician Assistant
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5100
JAMES HIGHT MD
Obstetrics & Gynecology
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5100
VICTORIA LYNN MESKO FNP
Nurse Practitioner (Family)
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5199
JAMES DICKSON
Obstetrics & Gynecology
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5100
JANE MCCAFFREY MD
Pediatrics
200 NORTH ST, SUITE 101
GENEVA, NY 14456
Ontario County (315) 787-5100

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 William Welbourne's NPI number?

The NPI number for William Welbourne is 1053309633. It was assigned to this individual provider in the NPPES registry on October 8, 2005.

Where is William Welbourne located?

William Welbourne practices at 200 North St Suite 102, Geneva, NY 14456. The listed phone number is (315) 787-5400.

What is William Welbourne's specialty?

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

Is William Welbourne enrolled in Medicare?

Yes. William Welbourne is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Welbourne's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Welbourne reassigns Medicare benefits to Flh Medical, PC (Geneva, NY). 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 William Welbourne's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Welbourne was last updated on September 26, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.