Dr. Daniel Frederic Hartman, MD
- Medicare services, 2024
- 238
- Medicare patients, 2024
- 206
- Part D claims, 2024
- 220
- Hospital affiliations
- 1
- Industry payments
- $142
- Practice address
- 5 Neponset Street, Worcester, MA 01606
- Practice phone
- Call (508) 853-2716
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Reliant Medical Group - Worcester - Neponset Street
Mammography / Breast Imaging Center · Worcester, Massachusetts
Find Dr. Hartman'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. Daniel Frederic Hartman is an internist in Worcester, Massachusetts
Dr. Hartman practices at Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts.
Dr. Hartman's NPI, 1609977784, was assigned on September 25, 2006. Dr. Hartman graduated from UMass Chan Medical School in 1985. Dr. Hartman holds Connecticut license 034317.
- NPI
- 1609977784NPI Registry (opens in a new tab)
- NPI enumeration date
- September 25, 2006
- NPI status
- Active
- Practice phone
- (508) 853-2716
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Daniel Frederic Hartman practices at Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts
Dr. Hartman's primary practice is Reliant Medical Group - Worcester - Neponset Street, at 5 Neponset Street, Worcester, MA 01606. The practice phone is (508) 853-2716.
- Reliant Medical Group - Worcester - Neponset Street5 Neponset Street, Worcester, MA 01606Phone(508) 853-2716
Source: Dmand AI Affiliation Data
Dr. Daniel Frederic Hartman is affiliated with 4 sites of care and 6 medical groups
Dr. Hartman's primary practice is Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts. Dr. Hartman is also affiliated with Lawrence + Memorial Hospital. The medical group on file is Atrius Health. Dmand AI also links Dr. Hartman to 5 more medical groups and 2 group practices and clinics, each named with a free account. Dr. Hartman's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel Frederic Hartman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hartman practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Reliant Medical Group - Worcester - Neponset Street | Available with a free account |
| +3 more sites and 5 medical groups | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Daniel Frederic Hartman is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Hartman's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hartman is licensed in Connecticut.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
Internists near Dr. Hartman
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. Daniel Frederic Hartman billed Medicare for 238 services in 2024
CMS data shows 238 Medicare services from Dr. Hartman across 7 procedure codes in 2024, for 206 Medicare patients. Medicare paid $14,506 for them. Every service was in an office.
Dr. Hartman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2662024: 20423%
- Other services
- 2023: 422024: 2248%
- Lab and pathology
- 2023: 292024: 1259%
Dr. Hartman compared with the Massachusetts median for internists, 2024
- Dr. Hartman
- Massachusetts median
- Medicare services
- 238vs 43145% below
- Medicare patients
- 206vs 1946% above
- Part D claims
- 111vs 40272% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Hartman'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. Hartman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hartman and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Frederic Hartman treated 206 Medicare patients in 2024, average age 74
CMS counts 206 Medicare patients who saw Dr. Hartman in 2024. The largest group is 65 to 74, with 99 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hartman's median patient age at 62, with 60% women.
Dr. Hartman's Medicare patients by age, 2024
Dr. Hartman's Medicare patients by sex, 2024
- Women13063%
- Men7637%
Chronic conditions among Dr. Hartman's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis49%
- Anxiety29%
- Ischemic heart disease24%
- Mood disorders24%
- Depression22%
- Atrial fibrillation21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hartman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Frederic Hartman wrote 220 Medicare Part D claims in 2024
In 2024, Dr. Hartman wrote 220 Medicare Part D claims for 179 patients. 90% of them were for generic drugs. CMS names the drug for 111 of them, across 4 drugs with 11 or more claims each, at $557 in total drug cost. In 2023, CMS named 234 claims across 10 drugs.
Dr. Hartman's Part D claims by kind of drug, 2024
- Generic198 claims90%
- Brand-name and other22 claims10%
Dr. Hartman'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. Hartman's Part D claims, 2024
- Antibiotics45%98 of 220 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: 2342024: 11153%
Drugs named by CMS: 4 in 2024, 10 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Daniel Frederic Hartman received $142 in industry payments from 2016 to 2017
CMS Open Payments shows 10 general payments to Dr. Hartman from 5 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Iroko Pharmaceuticals, LLC paid the most, $60.
General payments to Dr. Hartman by program year, 2016 to 2017
Companies that paid Dr. Hartman the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel Frederic Hartman graduated from UMass Chan Medical School
Dr. Hartman graduated from UMass Chan Medical School in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Frederic Hartman'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) |
| 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. Daniel Frederic Hartman
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. Daniel Frederic Hartman's NPI number?
Dr. Daniel Frederic Hartman's NPI number is 1609977784. It was assigned on September 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Frederic Hartman?
Dr. Daniel Frederic Hartman is an internist in Worcester, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daniel Frederic Hartman practice?
Dr. Hartman practices at 5 Neponset Street, Worcester, MA 01606. Dr. Hartman's primary practice is Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts. Dmand AI also links Dr. Hartman to 5 medical groups and 2 group practices and clinics.
What is Dr. Daniel Frederic Hartman's office phone number?
The practice phone on file for Dr. Hartman is (508) 853-2716.
What is Dr. Daniel Frederic Hartman's medical license number?
Dr. Hartman holds Connecticut license 034317.
Which hospitals is Dr. Daniel Frederic Hartman affiliated with?
Dr. Hartman is affiliated with Lawrence + Memorial Hospital.
What medical group is Dr. Daniel Frederic Hartman part of?
Dr. Hartman is linked to Atrius Health. Dmand AI links Dr. Hartman to 5 more medical groups.
Does Dr. Daniel Frederic Hartman accept Medicare?
Yes. CMS data shows Dr. Hartman billed Medicare for 238 services in 2024.
How many Medicare patients does Dr. Daniel Frederic Hartman see?
CMS counts 206 Medicare patients who saw Dr. Hartman in 2024, with an average age of 74.
What services does Dr. Daniel Frederic Hartman bill to Medicare?
In 2024, Dr. Hartman's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99212) and office visit, new patient (99203).
Show 4 more questionsShow fewer questions
Where did Dr. Daniel Frederic Hartman go to medical school?
Dr. Hartman graduated from UMass Chan Medical School in 1985.
What drugs does Dr. Daniel Frederic Hartman prescribe most?
In 2024 Medicare Part D data, Dr. Hartman's most prescribed drugs by claims were Prednisone, Doxycycline Monohydrate and Amoxicillin.
Has Dr. Daniel Frederic Hartman received payments from drug or device companies?
CMS Open Payments shows $142 in general payments to Dr. Hartman from 5 companies from 2016 to 2017. The largest total came from Iroko Pharmaceuticals, LLC.
How long has Dr. Daniel Frederic Hartman been practicing?
Dr. Hartman graduated from medical school in 1985, 41 years ago.
Selling to internal medicine practices?
See internists in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card