William Reginald Spencer III, PA-C
- Medicare patients, 2024
- 284
- Part D claims, 2024
- 180
- Hospital affiliations
- 1
- Medical groups
- 4
- State licenses
- 2
- Practice address
- 500 Upper Chesapeake Drive, Bel Air, MD 21014
- Practice phone
- Call (443) 643-3303
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find William Spencer'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.
William Reginald Spencer III is a physician assistant in Bel Air, Maryland
William Spencer practices at University of Maryland Upper Chesapeake Medical Center Bel Air in Bel Air, Maryland, part of University of Maryland Medical System.
William Spencer's NPI, 1679880066, was assigned on September 7, 2010. William Spencer holds Maryland license C0004283.
- NPI
- 1679880066NPI Registry (opens in a new tab)
- NPI enumeration date
- September 7, 2010
- NPI status
- Active
- Practice phone
- (443) 643-3303
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
William Reginald Spencer III practices at University of Maryland Upper Chesapeake Medical Center Bel Air in Bel Air, Maryland
William Spencer's primary practice is University of Maryland Upper Chesapeake Medical Center Bel Air, at 500 Upper Chesapeake Drive, Bel Air, MD 21014 in Harford County. The practice phone is (443) 643-3303.
- University of Maryland Upper Chesapeake Medical Center Bel Air500 Upper Chesapeake Drive, Bel Air, MD 21014 · Harford CountyPhone(443) 643-3303
Source: Dmand AI Affiliation Data
William Reginald Spencer III is affiliated with 2 sites of care and 4 medical groups
William Spencer's primary practice is University of Maryland Upper Chesapeake Medical Center Bel Air in Bel Air, Maryland, part of University of Maryland Medical System. The medical group on file is Emergency Medicine Physicians (EMP). Dmand AI also links William Spencer to 3 more medical groups and 1 community health center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Reginald Spencer III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Spencer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Maryland Upper Chesapeake Medical Center Bel Air | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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William Reginald Spencer III is one of 613 physician assistants in Maryland
Medical is William Spencer's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Dmand AI has William Spencer's licenses on file in 2 states: Maryland and Pennsylvania.
Specialties and state licenses
- Medical physician assistant, MarylandPrimary
- Pennsylvania license
Physician assistants near William Spencer
Counts of physician assistants 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
William Reginald Spencer III treated 284 Medicare patients in 2024, average age 73
CMS counts 284 Medicare patients who saw William Spencer in 2024. The largest group is 65 to 74, with 110 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts William Spencer's median patient age at 53, with 58% women.
William Spencer's Medicare patients by age, 2024
William Spencer's Medicare patients by sex, 2024
- Women16960%
- Men11540%
Chronic conditions among William Spencer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Mood disorders40%
- Anxiety39%
- Diabetes39%
- Depression35%
- Ischemic heart disease33%
Share of Medicare patients with each condition. A patient can have several.
William Spencer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Reginald Spencer III wrote 180 Medicare Part D claims in 2024
In 2024, William Spencer wrote 180 Medicare Part D claims for 126 patients. 98% of them were for generic drugs.
William Spencer's Part D claims by kind of drug, 2024
- Generic176 claims98%
- Brand-name and other4 claims2%
Drug classes CMS tracks in William Spencer's Part D claims, 2024
- Opioids8%14 of 180 claims
- Antibiotics34%61 of 180 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for William Reginald Spencer III'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 William Reginald Spencer III
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What is William Reginald Spencer III's NPI number?
William Reginald Spencer III's NPI number is 1679880066. It was assigned on September 7, 2010, and it is active in the NPI Registry.
What does William Reginald Spencer III specialize in?
William Reginald Spencer III is a physician assistant in Bel Air, Maryland. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does William Reginald Spencer III practice?
William Spencer practices at 500 Upper Chesapeake Drive, Bel Air, MD 21014. William Spencer's primary practice is University of Maryland Upper Chesapeake Medical Center Bel Air in Bel Air, Maryland, part of University of Maryland Medical System. Dmand AI also links William Spencer to 3 medical groups and 1 community health center.
What is William Reginald Spencer III's office phone number?
The practice phone on file for William Spencer is (443) 643-3303.
What is William Reginald Spencer III's medical license number?
William Spencer holds Maryland license C0004283, one of the licenses on file in 2 states.
Which states has William Reginald Spencer III been licensed in?
Dmand AI has state licenses on file for William Spencer in Maryland and Pennsylvania.
Which hospitals is William Reginald Spencer III affiliated with?
William Spencer practices at University of Maryland Upper Chesapeake Medical Center Bel Air in Bel Air, Maryland.
What medical group is William Reginald Spencer III part of?
William Spencer is linked to Emergency Medicine Physicians (EMP). Dmand AI links William Spencer to 3 more medical groups.
How many Medicare patients does William Reginald Spencer III see?
CMS counts 284 Medicare patients who saw William Spencer in 2024, with an average age of 73.
How long has William Reginald Spencer III been practicing?
William Spencer's NPI was assigned in 2010.
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