Timothy D. Grinnell, PA-C
- Medicare patients, 2024
- 311
- Part D claims, 2024
- 345
- Hospital affiliations
- 2
- Industry payments
- $155
- Medical groups
- 5
- Practice address
- 199 Reedsdale Road, Milton, MA 02186
- Practice phone
- Call (617) 696-4600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Timothy Grinnell'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.
Timothy D. Grinnell is a physician assistant in Milton, Massachusetts
Timothy Grinnell practices at Beth Israel Deaconess Hospital-Milton in Milton, Massachusetts, part of Beth Israel Lahey Health.
Timothy Grinnell's NPI, 1790828119, was assigned on February 15, 2007. Timothy Grinnell holds Massachusetts license PA2274.
- NPI
- 1790828119NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345409363
- NPI enumeration date
- February 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 696-4600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Timothy D. Grinnell practices at Beth Israel Deaconess Hospital-Milton in Milton, Massachusetts
Timothy Grinnell's primary practice is Beth Israel Deaconess Hospital-Milton, at 199 Reedsdale Road, Milton, MA 02186 in Norfolk County. The practice phone is (617) 696-4600.
- Beth Israel Deaconess Hospital-Milton199 Reedsdale Road, Milton, MA 02186 · Norfolk CountyPhone(617) 696-4600
Source: Dmand AI Affiliation Data
Timothy D. Grinnell is affiliated with 5 sites of care and 5 medical groups
Timothy Grinnell's primary practice is Beth Israel Deaconess Hospital-Milton in Milton, Massachusetts, part of Beth Israel Lahey Health. Timothy Grinnell is also affiliated with New England Baptist Hospital. The medical group on file is Northeast Orthopaedic Alliance. Dmand AI also links Timothy Grinnell to 4 more medical groups and 3 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Timothy D. Grinnell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Timothy Grinnell practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beth Israel Deaconess Hospital-Milton | Available with a free account |
| +4 more sites and 4 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 Beth Israel Lahey Health and 6.2K+ hospitals, with verified contacts in the same login.
Timothy D. Grinnell is one of 3,922 physician assistants in Massachusetts
Physician assistant is Timothy Grinnell's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Timothy Grinnell is licensed in Massachusetts.
Specialties and state licenses
- Physician assistant, MassachusettsPrimary
Physician assistants near Timothy Grinnell
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
Timothy D. Grinnell treated 311 Medicare patients in 2024, average age 74
CMS counts 311 Medicare patients who saw Timothy Grinnell in 2024. The largest group is 65 to 74, with 144 patients. 75% of them have arthritis, and 75% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Timothy Grinnell's median patient age at 71, with 61% women.
Timothy Grinnell's Medicare patients by age, 2024
Timothy Grinnell's Medicare patients by sex, 2024
- Women20666%
- Men10534%
Chronic conditions among Timothy Grinnell's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety39%
- Mood disorders33%
- Depression30%
- Ischemic heart disease27%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Timothy Grinnell's 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
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Timothy D. Grinnell wrote 345 Medicare Part D claims in 2024
In 2024, Timothy Grinnell wrote 345 Medicare Part D claims for 169 patients. 91% of them were for generic drugs.
Timothy Grinnell's Part D claims by kind of drug, 2024
- Generic314 claims91%
- Brand-name31 claims9%
Drug classes CMS tracks in Timothy Grinnell's Part D claims, 2024
- Opioids70%241 of 345 claims
- Antibiotics10%36 of 345 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
Timothy D. Grinnell offers telehealth to Medicare patients
Timothy Grinnell accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Timothy Grinnell as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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.
Timothy D. Grinnell received $155 in industry payments in 2025
CMS Open Payments shows 2 general payments to Timothy Grinnell from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Vertex Pharmaceuticals Incorporated paid the most, $109.
Companies that paid Timothy Grinnell the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Timothy D. Grinnell'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) |
| 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) |
| 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 Timothy D. Grinnell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Timothy D. Grinnell's NPI number?
Timothy D. Grinnell's NPI number is 1790828119. It was assigned on February 15, 2007, and it is active in the NPI Registry.
What does Timothy D. Grinnell specialize in?
Timothy D. Grinnell is a physician assistant in Milton, Massachusetts. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Timothy D. Grinnell practice?
Timothy Grinnell practices at 199 Reedsdale Road, Milton, MA 02186. Timothy Grinnell's primary practice is Beth Israel Deaconess Hospital-Milton in Milton, Massachusetts, part of Beth Israel Lahey Health. Dmand AI also links Timothy Grinnell to 4 medical groups and 3 group practices and clinics.
What is Timothy D. Grinnell's office phone number?
The practice phone on file for Timothy Grinnell is (617) 696-4600.
What is Timothy D. Grinnell's medical license number?
Timothy Grinnell holds Massachusetts license PA2274.
Which hospitals is Timothy D. Grinnell affiliated with?
Timothy Grinnell practices at Beth Israel Deaconess Hospital-Milton in Milton, Massachusetts. Timothy Grinnell is also affiliated with New England Baptist Hospital.
What medical group is Timothy D. Grinnell part of?
Timothy Grinnell is linked to Northeast Orthopaedic Alliance. Dmand AI links Timothy Grinnell to 4 more medical groups.
Does Timothy D. Grinnell accept Medicare?
Yes. CMS lists Timothy Grinnell as accepting Medicare assignment.
Does Timothy D. Grinnell offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Timothy Grinnell as offering telehealth services.
How many Medicare patients does Timothy D. Grinnell see?
CMS counts 311 Medicare patients who saw Timothy Grinnell in 2024, with an average age of 74.
Has Timothy D. Grinnell received payments from drug or device companies?
CMS Open Payments shows $155 in general payments to Timothy Grinnell from 2 companies from 2025 to 2025. The largest total came from Vertex Pharmaceuticals Incorporated.
How long has Timothy D. Grinnell been practicing?
Timothy Grinnell graduated from medical school in 2006, 20 years ago.
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