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WILLIAM B STEPHENSON MD
NPI 1003985714
Pediatrics in Rockport, ME

Active since November 07, 2006PECOS Enrolled
15 ANCHOR DR STE 103, ROCKPORT, ME 04856(207) 301-5600(207) 301-5360 Get Directions Write a Review

NPPES record last updated: January 2, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William B Stephenson Md NPPES

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

WILLIAM B STEPHENSON MD (NPI 1003985714) is an individual pediatrics provider in Rockport, Maine, licensed in Maine (MD15860) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Belfast.

NPPES Registry Identity

NPI1003985714
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameWILLIAM B STEPHENSONCredential: MD
Location Address15 ANCHOR DR STE 103Rockport, ME 04856-3847
Mailing Address15 Anchor Dr Ste 103Rockport, ME 04856-3847 · (207) 301-5600 · Fax (207) 301-5360
Phone(207) 301-5600
Fax(207) 301-5360
Sole ProprietorNo
Enumeration DateNovember 7, 2006
Last NPPES UpdateJanuary 2, 2025
NPPES CertifiedJanuary 2, 2025
✔ NPI 1003985714 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in ME · MD15860
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.
15 ANCHOR DR STE 103, Rockport, ME 04856
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Secondary Practice Location 1

Location 19 Fahy StBelfast, ME 04915-6028 · Phone (207) 505-3600 · Fax (207) 553-8364

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Taro 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)

William B Stephenson Md 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 Stephenson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mainehealth
2.7 mi
General Acute Care Hospital
6 GLEN COVE DR
Rockport, ME 04856
  • Reassigned Medicare billing, Maine enrollment
  • Also billed through NPI 1841397932 (Maine)
  • 3,140 clinicians in this Medicare group
NPI 1578043378 (207) 596-8000

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 04856 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
$82.58 typical visit price
range $53.26 – $162.77
Typical copayment $20.64 (range $13.31 – $40.69)
Most-billed visit code 99203
Established Patient
$94.60 typical visit price
range $16.90 – $132.79
Typical copayment $23.65 (range $4.22 – $33.19)
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 5

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

DR. MARGARET ELIZABETH KLOBY MD
Pediatrics
15 ANCHOR DR STE 103
ROCKPORT, ME 04856
Knox County (207) 301-5600
HAYDN TAYLOR DEAL LCSW
Social Worker (Clinical)
15 ANCHOR DR STE 103
ROCKPORT, ME 04856
Knox County (207) 301-5600
JENNIFER WOODEN MD
Pediatrics
15 ANCHOR DR STE 103
ROCKPORT, ME 04856
Knox County (207) 301-5600
MARY HANKIN WOOD MD
Pediatrics
15 ANCHOR DR STE 103
ROCKPORT, ME 04856
Knox County (207) 301-5600
DR. PETER CLIFFORD VICKERMAN MD
Pediatrics
15 ANCHOR DR STE 103
ROCKPORT, ME 04856
Knox County (207) 301-5600

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 Stephenson's NPI number?

The NPI number for William Stephenson is 1003985714. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Where is William Stephenson located?

William Stephenson practices at 15 Anchor Dr Ste 103, Rockport, ME 04856. The listed phone number is (207) 301-5600.

What is William Stephenson's specialty?

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

Is William Stephenson enrolled in Medicare?

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

Which organization bills Medicare for William Stephenson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Stephenson reassigns Medicare benefits to Mainehealth (Rockport, ME). 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 Stephenson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Stephenson accept?

Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list William Stephenson 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 William Stephenson was last updated on January 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.