Dr. William John Dahms Jr., DO
- Medicare services, 2024
- 4,215
- Medicare patients, 2024
- 691
- Part D claims, 2024
- 1,397
- Hospital affiliations
- 3
- Industry payments
- $159,326
- Practice address
- 4923 Ogletown-Stanton Road Suite 100, Newark, DE 19713
- Practice phone
- Call (302) 993-0310
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mid-Atlantic Endoscopy Center
Surgery Center - Medicare-Certified · Newark, Delaware
Find Dr. Dahms' 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 John Dahms Jr. is a nephrologist in Newark, Delaware
Dr. Dahms practices at Mid-Atlantic Endoscopy Center in Newark, Delaware.
Dr. Dahms' NPI, 1952419376, was assigned on August 26, 2006. Dr. Dahms graduated from Philadelphia College of Osteopathic Medicine in 2000. Dr. Dahms holds Delaware license C2-0008640.
- NPI
- 1952419376NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981606274
- NPI enumeration date
- August 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (302) 993-0310
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William John Dahms Jr. practices at Mid-Atlantic Endoscopy Center in Newark, Delaware
Dr. Dahms' primary practice is Mid-Atlantic Endoscopy Center, at 4923 Ogletown-Stanton Road Suite 100, Newark, DE 19713. The practice phone is (302) 993-0310.
- Mid-Atlantic Endoscopy Center4923 Ogletown-Stanton Road Suite 100, Newark, DE 19713Phone(302) 993-0310
Source: Dmand AI Affiliation Data
Dr. William John Dahms Jr. is affiliated with 9 sites of care and 1 medical group
Dr. Dahms' primary practice is Mid-Atlantic Endoscopy Center in Newark, Delaware. Dr. Dahms is also affiliated with Christiana Hospital. The medical group on file is Nephrology Associates, P.A. Dmand AI also links Dr. Dahms to 2 more hospitals, 4 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William John Dahms Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dahms practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mid-Atlantic Endoscopy Center | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William John Dahms Jr. is one of 49 nephrologists in Delaware
Nephrology is Dr. Dahms' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dmand AI has Dr. Dahms' licenses on file in 2 states: Delaware and Maryland.
Specialties and state licenses
- Nephrology, DelawarePrimary
- Maryland license
Nephrologists near Dr. Dahms
Counts of nephrologists 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 John Dahms Jr. billed Medicare for 4,215 services in 2024
CMS data shows 4,215 Medicare services from Dr. Dahms across 21 procedure codes in 2024, for 691 Medicare patients. Medicare paid $249,887 for them.
Dr. Dahms' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 2,1972024: 2,1413%
- Office and hospital visits
- 2023: 1,2702024: 1,3567%
- Tests and treatments
- 2023: 6502024: 58710%
- Imaging
- 2023: 1242024: 7936%
- Surgery
- 2023: 1092024: 5252%
Where Dr. Dahms' Medicare services took place, 2024
- In an office3,02072%
- In a facility1,19528%
Dr. Dahms compared with the Delaware median for nephrologists, 2024
- Dr. Dahms
- Delaware median
- Medicare services
- 4,215vs 2,70656% above
- Medicare patients
- 691vs 54627% above
- Part D claims
- 1,158vs 80943% above
Medians across 47 nephrologists in Delaware with Dmand AI profiles that report each measure.
Dr. Dahms' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Dahms?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dahms and other nephrologists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William John Dahms Jr. treated 691 Medicare patients in 2024, average age 74
CMS counts 691 Medicare patients who saw Dr. Dahms in 2024. The largest group is 75 to 84, with 255 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 21% are also on Medicaid. Their average risk score is 3.95, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dahms' median patient age at 71, with 44% women.
Dr. Dahms' Medicare patients by age, 2024
Dr. Dahms' Medicare patients by sex, 2024
- Women32347%
- Men36853%
Chronic conditions among Dr. Dahms' Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes56%
- Ischemic heart disease47%
- Arthritis46%
- Heart failure46%
- Mood disorders39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dahms' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women44%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William John Dahms Jr. wrote 1,397 Medicare Part D claims in 2024
In 2024, Dr. Dahms wrote 1,397 Medicare Part D claims for 243 patients. 90% of them were for generic drugs. CMS names the drug for 1,158 of them, across 30 drugs with 11 or more claims each, at $300,926 in total drug cost. In 2023, CMS named 1,093 claims across 28 drugs.
Dr. Dahms' Part D claims by kind of drug, 2024
- Generic1,261 claims90%
- Brand-name136 claims10%
Dr. Dahms' 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0932024: 1,1586%
Drugs named by CMS: 30 in 2024, 28 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
Dr. William John Dahms Jr. offers telehealth to Medicare patients
Dr. Dahms accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dahms as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William John Dahms Jr. received $159,326 in industry payments from 2016 to 2025
CMS Open Payments shows 732 general payments to Dr. Dahms from 47 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 78% of the total. Amgen Inc. paid the most, $62,825.
General payments to Dr. Dahms by program year, 2016 to 2025
General payments to Dr. Dahms by kind, 2016 to 2025
- Speaker and faculty fees$124,25578%
- Food and beverage$15,32110%
- Travel and lodging$8,3265%
- Honoraria$6,3604%
- Other$5,0643%
Companies that paid Dr. Dahms the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William John Dahms Jr. graduated from Philadelphia College of Osteopathic Medicine
Dr. Dahms graduated from Philadelphia College of Osteopathic Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William John Dahms Jr.'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 John Dahms Jr.
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 John Dahms Jr.'s NPI number?
Dr. William John Dahms Jr.'s NPI number is 1952419376. It was assigned on August 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William John Dahms Jr.?
Dr. William John Dahms Jr. is a nephrologist in Newark, Delaware. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. William John Dahms Jr. practice?
Dr. Dahms practices at 4923 Ogletown-Stanton Road Suite 100, Newark, DE 19713. Dr. Dahms' primary practice is Mid-Atlantic Endoscopy Center in Newark, Delaware. Dmand AI also links Dr. Dahms to 2 hospitals, 4 dialysis centers and 1 group practice or clinic.
What is Dr. William John Dahms Jr.'s office phone number?
The practice phone on file for Dr. Dahms is (302) 993-0310.
What is Dr. William John Dahms Jr.'s medical license number?
Dr. Dahms holds Delaware license C2-0008640, one of the licenses on file in 2 states.
Which states has Dr. William John Dahms Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Dahms in Delaware and Maryland.
Which hospitals is Dr. William John Dahms Jr. affiliated with?
Dr. Dahms is affiliated with Christiana Hospital. Dmand AI links Dr. Dahms to 2 more hospitals.
What medical group is Dr. William John Dahms Jr. part of?
Dr. Dahms is linked to Nephrology Associates, P.A.
Does Dr. William John Dahms Jr. accept Medicare?
Yes. CMS data shows Dr. Dahms billed Medicare for 4,215 services in 2024, and Dr. Dahms accepts Medicare assignment.
Does Dr. William John Dahms Jr. offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dahms as offering telehealth services.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. William John Dahms Jr. see?
CMS counts 691 Medicare patients who saw Dr. Dahms in 2024, with an average age of 74.
What services does Dr. William John Dahms Jr. bill to Medicare?
In 2024, Dr. Dahms' most billed Medicare services were medicare temporary code (Q5106), medicare temporary code (Q9967) and hospital inpatient care (99233).
Where did Dr. William John Dahms Jr. go to medical school?
Dr. Dahms graduated from Philadelphia College of Osteopathic Medicine in 2000.
What drugs does Dr. William John Dahms Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Dahms' most prescribed drugs by claims were Torsemide, Losartan Potassium and Allopurinol.
Has Dr. William John Dahms Jr. received payments from drug or device companies?
CMS Open Payments shows $159,326 in general payments to Dr. Dahms from 47 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. William John Dahms Jr. been practicing?
Dr. Dahms graduated from medical school in 2000, 26 years ago.
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