Dr. William B. Stephenson, MD
- Part D claims, 2021
- 19
- Hospital affiliations
- 1
- Industry payments
- $67
- Medical groups
- 2
- State license
- 1
- Practice address
- 6 Glen Cove Drive, Rockport, ME 04856
- Practice phone
- Call (207) 921-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Stephenson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William B. Stephenson is a pediatrician in Rockport, Maine
Dr. Stephenson practices at MaineHealth Pen Bay Hospital in Rockport, Maine, part of MaineHealth.
Dr. Stephenson's NPI, 1003985714, was assigned on November 7, 2006. Dr. Stephenson holds Maine license MD15860.
- NPI
- 1003985714NPI Registry (opens in a new tab)
- NPI enumeration date
- November 7, 2006
- NPI status
- Active
- Practice phone
- (207) 921-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William B. Stephenson practices at MaineHealth Pen Bay Hospital in Rockport, Maine
Dr. Stephenson's primary practice is MaineHealth Pen Bay Hospital, at 6 Glen Cove Drive, Rockport, ME 04856 in Knox County. The practice phone is (207) 921-8000.
- MaineHealth Pen Bay Hospital6 Glen Cove Drive, Rockport, ME 04856 · Knox CountyPhone(207) 921-8000
Source: Dmand AI Affiliation Data
Dr. William B. Stephenson is affiliated with 4 sites of care and 2 medical groups
Dr. Stephenson's primary practice is MaineHealth Pen Bay Hospital in Rockport, Maine, part of MaineHealth. The medical group on file is MaineHealth Primary Care - Family Medicine - Portland. Dmand AI also links Dr. Stephenson to 2 more group practices and clinics, 1 physician office and 1 medical group, each named with a free account. Dr. Stephenson's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William B. Stephenson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stephenson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MaineHealth Pen Bay Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William B. Stephenson is one of 246 pediatricians in Maine
Pediatrics is Dr. Stephenson's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Stephenson is licensed in Maine.
Specialties and state licenses
- Pediatrics, MainePrimary
Pediatricians near Dr. Stephenson
Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William B. Stephenson's patients have a median age of 11
Across all payers, Dmand AI patient panel data puts Dr. Stephenson's median patient age at 11, with 42% women.
Dr. Stephenson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 11
Patient panel by sex, all payers
- Women42%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. William B. Stephenson wrote 19 Medicare Part D claims in 2021
In 2021, Dr. Stephenson wrote 19 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $32 in total drug cost. In 2020, CMS named 22 claims across 1 drug.
Dr. Stephenson's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 222021: 1914%
Drugs named by CMS: 1 in 2021, 1 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William B. Stephenson received $67 in industry payments from 2017 to 2019
CMS Open Payments shows 4 general payments to Dr. Stephenson from 2 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $55.
General payments to Dr. Stephenson by program year, 2017 to 2019
Companies that paid Dr. Stephenson the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William B. Stephenson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William B. Stephenson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William B. Stephenson's NPI number?
Dr. William B. Stephenson's NPI number is 1003985714. It was assigned on November 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William B. Stephenson?
Dr. William B. Stephenson is a pediatrician in Rockport, Maine. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. William B. Stephenson practice?
Dr. Stephenson practices at 6 Glen Cove Drive, Rockport, ME 04856. Dr. Stephenson's primary practice is MaineHealth Pen Bay Hospital in Rockport, Maine, part of MaineHealth. Dmand AI also links Dr. Stephenson to 2 group practices and clinics, 1 physician office and 1 medical group.
What is Dr. William B. Stephenson's office phone number?
The practice phone on file for Dr. Stephenson is (207) 921-8000.
What is Dr. William B. Stephenson's medical license number?
Dr. Stephenson holds Maine license MD15860.
Which hospitals is Dr. William B. Stephenson affiliated with?
Dr. Stephenson practices at MaineHealth Pen Bay Hospital in Rockport, Maine.
What medical group is Dr. William B. Stephenson part of?
Dr. Stephenson is linked to MaineHealth Primary Care - Family Medicine - Portland. Dmand AI links Dr. Stephenson to 1 more medical group.
What drugs does Dr. William B. Stephenson prescribe most?
In 2021 Medicare Part D data, Dr. Stephenson's most prescribed drugs by claims were Risperidone.
Has Dr. William B. Stephenson received payments from drug or device companies?
CMS Open Payments shows $67 in general payments to Dr. Stephenson from 2 companies from 2017 to 2019. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. William B. Stephenson been practicing?
Dr. Stephenson graduated from medical school in 1999, 27 years ago.
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