Dr. Thomas A. Neef, MD
- Medicare services, 2024
- 1,661
- Medicare patients, 2024
- 276
- Part D claims, 2024
- 5,408
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 4755 Ogletown Stanton Road, Newark, DE 19713
- Practice phone
- Call (302) 320-2926
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare Adult Outpatient Psychiatry & Therapy
Outpatient Mental Health Clinic · Newark, Delaware
Find Dr. Neef'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. Thomas A. Neef is an internist in Newark, Delaware
Dr. Neef practices at ChristianaCare Adult Outpatient Psychiatry & Therapy in Newark, Delaware.
Dr. Neef's NPI, 1568550309, was assigned on October 10, 2006. Dr. Neef graduated from Georgetown University School Of Medicine in 1975. Dr. Neef holds Delaware license C1-1941.
- NPI
- 1568550309NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173654001
- NPI enumeration date
- October 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (302) 320-2926
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas A. Neef practices at ChristianaCare Adult Outpatient Psychiatry & Therapy in Newark, Delaware
Dr. Neef's primary practice is ChristianaCare Adult Outpatient Psychiatry & Therapy, at 4755 Ogletown Stanton Road, Newark, DE 19713. The practice phone is (302) 320-2926.
- ChristianaCare Adult Outpatient Psychiatry & Therapy4755 Ogletown Stanton Road, Newark, DE 19713Phone(302) 320-2926
Source: Dmand AI Affiliation Data
Dr. Thomas A. Neef is affiliated with 7 sites of care
Dr. Neef's primary practice is ChristianaCare Adult Outpatient Psychiatry & Therapy in Newark, Delaware. Dr. Neef is also affiliated with Christiana Hospital. Dmand AI also links Dr. Neef to 1 more hospital, 3 home health agencies and 1 hospice, 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. Thomas A. Neef's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Neef practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Adult Outpatient Psychiatry & Therapy | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas A. Neef is one of 615 internists in Delaware
Internal medicine is Dr. Neef's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Neef's licenses on file in 2 states: Delaware and Pennsylvania.
Specialties and state licenses
- Internal medicine, DelawarePrimary
- Pennsylvania license
Clinical focus
Dmand AI lists acid reflux, acute mini-stroke (TIA), acute sinusitis, acute skin infection, ADHD, aneurysm, ankle or foot injury and anxiety among the conditions Dr. Neef treats.
Internists near Dr. Neef
Counts of internists 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. Thomas A. Neef billed Medicare for 1,661 services in 2024
CMS data shows 1,661 Medicare services from Dr. Neef across 13 procedure codes in 2024, for 276 Medicare patients. Medicare paid $118,118 for them. Every service was in an office.
Dr. Neef's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2222024: 1,1764%
- Other services
- 2023: 2622024: 41257%
- Lab and pathology
- 2023: 232024: 57148%
- Tests and treatments
- 2023: 262024: 1638%
Dr. Neef compared with the Delaware median for internists, 2024
- Dr. Neef
- Delaware median
- Medicare services
- 1,661vs 6862.4 times
- Medicare patients
- 276vs 287Close to median
- Part D claims
- 4,844vs 12439.1 times
Medians across 565 internists in Delaware with Dmand AI profiles that report each measure.
Dr. Neef's 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. Neef?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Neef and other internists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas A. Neef treated 276 Medicare patients in 2024, average age 78
CMS counts 276 Medicare patients who saw Dr. Neef in 2024. The largest group is 75 to 84, with 111 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Neef's median patient age at 75, with 52% women.
Dr. Neef's Medicare patients by age, 2024
Dr. Neef's Medicare patients by sex, 2024
- Women15958%
- Men11742%
Chronic conditions among Dr. Neef's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes36%
- Anxiety30%
- Chronic kidney disease30%
- Ischemic heart disease27%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Neef's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas A. Neef wrote 5,408 Medicare Part D claims in 2024
In 2024, Dr. Neef wrote 5,408 Medicare Part D claims for 303 patients. 90% of them were for generic drugs. CMS names the drug for 4,844 of them, across 100 drugs with 11 or more claims each, at $364,044 in total drug cost. In 2023, CMS named 4,976 claims across 99 drugs.
Dr. Neef's Part D claims by kind of drug, 2024
- Generic4,871 claims90%
- Brand-name490 claims9%
- Other47 claims1%
Dr. Neef'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. Neef's Part D claims, 2024
- Opioids6%312 of 5,408 claims
- Antibiotics3%144 of 5,408 claims
- Antipsychotics, patients 65 and over1%31 of 5,408 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: 4,9762024: 4,8443%
Drugs named by CMS: 100 in 2024, 99 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. Thomas A. Neef offers telehealth to Medicare patients
Dr. Neef accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Neef as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Thomas A. Neef has 1 publication on record
Dmand AI links 1 paper to Dr. Neef.
Recent publications by Dr. Neef
See who Dr. Neef researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Neef works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas A. Neef received $28 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Neef from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $28.
Companies that paid Dr. Neef the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas A. Neef has 1 award and honors on record
Dmand AI lists 1 award for Dr. Neef, most recently CMS Stage 1 2012 in 2012.
Awards and honors for Dr. Neef
- 2012
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Thomas A. Neef graduated from Georgetown University School Of Medicine
Dr. Neef graduated from Georgetown University School Of Medicine in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Thomas A. Neef accepts plans from 16 insurance carriers
Dr. Neef is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Cigna
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- Elevance
- +8 more carriersWith a free account
Plan types Dr. Neef accepts, by number of carriers
- PPO11
- Medicare9
- HMO8
- POS4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas A. Neef'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Thomas A. Neef
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. Thomas A. Neef's NPI number?
Dr. Thomas A. Neef's NPI number is 1568550309. It was assigned on October 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas A. Neef?
Dr. Thomas A. Neef is an internist in Newark, Delaware. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Thomas A. Neef practice?
Dr. Neef practices at 4755 Ogletown Stanton Road, Newark, DE 19713. Dr. Neef's primary practice is ChristianaCare Adult Outpatient Psychiatry & Therapy in Newark, Delaware. Dmand AI also links Dr. Neef to 1 hospital, 3 home health agencies and 1 hospice.
What is Dr. Thomas A. Neef's office phone number?
The practice phone on file for Dr. Neef is (302) 320-2926.
What is Dr. Thomas A. Neef's medical license number?
Dr. Neef holds Delaware license C1-1941, one of the licenses on file in 2 states.
Which states has Dr. Thomas A. Neef been licensed in?
Dmand AI has state licenses on file for Dr. Neef in Delaware (1980 to 2027) and Pennsylvania (1976 to 1988).
Which hospitals is Dr. Thomas A. Neef affiliated with?
Dr. Neef is affiliated with Christiana Hospital. Dmand AI links Dr. Neef to 1 more hospital.
Does Dr. Thomas A. Neef accept Medicare?
Yes. CMS data shows Dr. Neef billed Medicare for 1,661 services in 2024, and Dr. Neef accepts Medicare assignment.
Does Dr. Thomas A. Neef offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Neef as offering telehealth services.
How many Medicare patients does Dr. Thomas A. Neef see?
CMS counts 276 Medicare patients who saw Dr. Neef in 2024, with an average age of 78.
Show 7 more questionsShow fewer questions
What services does Dr. Thomas A. Neef bill to Medicare?
In 2024, Dr. Neef's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
Where did Dr. Thomas A. Neef go to medical school?
Dr. Neef graduated from Georgetown University School Of Medicine in 1975.
What drugs does Dr. Thomas A. Neef prescribe most?
In 2024 Medicare Part D data, Dr. Neef's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Thomas A. Neef received payments from drug or device companies?
CMS Open Payments shows $28 in general payments to Dr. Neef from 1 company from 2018 to 2018. The largest total came from Allergan Inc.
How long has Dr. Thomas A. Neef been practicing?
Dr. Neef graduated from medical school in 1975, 51 years ago.
Does Dr. Thomas A. Neef do research?
Dmand AI links 1 publication to Dr. Neef.
What insurance does Dr. Thomas A. Neef accept?
Dr. Neef is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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