Dr. William Thomas Greer III, MD
- Part D claims, 2024
- 1,782
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 9733 Healthway Drive, Berlin, MD 21811
- Practice phone
- Call (410) 641-1100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Greer'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 Thomas Greer III is a family medicine physician in Berlin, Maryland
Dr. Greer practices at TidalHealth Atlantic in Berlin, Maryland, part of TidalHealth Peninsula Regional.
Dr. Greer's NPI, 1760465835, was assigned on November 22, 2005. Dr. Greer holds Maryland license D0035764.
- NPI
- 1760465835NPI Registry (opens in a new tab)
- NPI enumeration date
- November 22, 2005
- NPI status
- Active
- Practice phone
- (410) 641-1100
- 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
Dr. William Thomas Greer III practices at TidalHealth Atlantic in Berlin, Maryland
Dr. Greer's primary practice is TidalHealth Atlantic, at 9733 Healthway Drive, Berlin, MD 21811 in Worcester County. The practice phone is (410) 641-1100.
- TidalHealth Atlantic9733 Healthway Drive, Berlin, MD 21811 · Worcester CountyPhone(410) 641-1100
Source: Dmand AI Affiliation Data
Dr. William Thomas Greer III is affiliated with 1 medical group
Dr. Greer's primary practice is TidalHealth Atlantic in Berlin, Maryland, part of TidalHealth Peninsula Regional. The medical group on file is TidalHealth Atlantic.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Thomas Greer III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| TidalHealth Atlantic | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across TidalHealth Peninsula Regional and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Thomas Greer III is one of 1,698 family medicine physicians in Maryland
Family medicine is Dr. Greer's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Greer is licensed in Maryland.
Specialties and state licenses
- Family medicine, MarylandPrimary
Family medicine physicians near Dr. Greer
Counts of family medicine physicians 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 Thomas Greer III's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Greer's median patient age at 73, with 53% women.
Dr. Greer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women53%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. William Thomas Greer III wrote 1,782 Medicare Part D claims in 2024
In 2024, Dr. Greer wrote 1,782 Medicare Part D claims for 122 patients. 88% of them were for generic drugs. CMS names the drug for 1,291 of them, across 55 drugs with 11 or more claims each, at $98,955 in total drug cost. In 2023, CMS named 1,444 claims across 56 drugs.
Dr. Greer's Part D claims by kind of drug, 2024
- Generic1,564 claims88%
- Brand-name and other218 claims12%
Dr. Greer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Greer's Part D claims, 2024
- Opioids3%51 of 1,782 claims
- Antibiotics9%152 of 1,782 claims
- Antipsychotics, patients 65 and over1%13 of 1,782 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,4442024: 1,29111%
Drugs named by CMS: 55 in 2024, 56 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Sources for Dr. William Thomas Greer 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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 Dr. William Thomas Greer III
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 Thomas Greer III's NPI number?
Dr. William Thomas Greer III's NPI number is 1760465835. It was assigned on November 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Thomas Greer III?
Dr. William Thomas Greer III is a family medicine physician in Berlin, Maryland. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William Thomas Greer III practice?
Dr. Greer practices at 9733 Healthway Drive, Berlin, MD 21811. Dr. Greer's primary practice is TidalHealth Atlantic in Berlin, Maryland, part of TidalHealth Peninsula Regional.
What is Dr. William Thomas Greer III's office phone number?
The practice phone on file for Dr. Greer is (410) 641-1100.
What is Dr. William Thomas Greer III's medical license number?
Dr. Greer holds Maryland license D0035764.
Which hospitals is Dr. William Thomas Greer III affiliated with?
Dr. Greer practices at TidalHealth Atlantic in Berlin, Maryland.
What medical group is Dr. William Thomas Greer III part of?
Dr. Greer is linked to TidalHealth Atlantic.
What drugs does Dr. William Thomas Greer III prescribe most?
In 2024 Medicare Part D data, Dr. Greer's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Rosuvastatin Calcium.
How long has Dr. William Thomas Greer III been practicing?
Dr. Greer's NPI was assigned in 2005.
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