Dr. Timothy A. Diller, MD
- Medicare services, 2019
- 283
- Part D claims, 2019
- 15
- Hospital affiliations
- 1
- Industry payments
- $29
- State licenses
- 2
- Practice address
- One N Atkinson Drive, Ludington, MI 49431
- Practice phone
- Call (231) 843-2591
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diller'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. Timothy A. Diller is a general surgeon in Ludington, Michigan
Dr. Diller practices at Corewell Health Ludington Hospital in Ludington, Michigan, part of Corewell Health.
Dr. Diller's NPI, 1205899481, was assigned on April 10, 2006. Dr. Diller holds Michigan license 4301044283.
- NPI
- 1205899481NPI Registry (opens in a new tab)
- NPI enumeration date
- April 10, 2006
- NPI status
- Active
- Practice phone
- (231) 843-2591
- 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. Timothy A. Diller practices at 2 locations in Ludington, Michigan
Dr. Diller's primary practice is Corewell Health Ludington Hospital, at One N Atkinson Drive, Ludington, MI 49431 in Mason County. The practice phone is (231) 843-2591. Dr. Diller also practices at Spectrum Health Ludington Hospital, 1 N Atkinson Dr, Ludington, MI 49431.
- Corewell Health Ludington HospitalPrimaryOne N Atkinson Drive, Ludington, MI 49431 · Mason CountyPhone(231) 843-2591
- Spectrum Health Ludington Hospital1 N Atkinson Dr, Ludington, MI 49431 · Mason CountyPhone(231) 843-2591
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Timothy A. Diller is affiliated with 1 site of care
Dr. Diller's primary practice is Corewell Health Ludington Hospital in Ludington, Michigan, part of Corewell Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy A. Diller's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diller practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Ludington Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Corewell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Timothy A. Diller is one of 1,095 general surgeons in Michigan
Surgery is Dr. Diller's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Diller's licenses on file in 2 states: Michigan and Arkansas.
Specialties and state licenses
- Surgery, MichiganPrimary
- Vascular surgery, Arkansas
General surgeons near Dr. Diller
Counts of general surgeons 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. Timothy A. Diller billed Medicare for 283 services in 2019
CMS data shows 283 Medicare services from Dr. Diller across 4 procedure codes in 2019. Medicare paid $23,208 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Diller's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 3782019: 19548%
- Tests and treatments
- 2018: 1592019: 8845%
Dr. Diller compared with the Michigan median for general surgeons, 2019
- Dr. Diller
- Michigan median
- Medicare services
- 283vs 1262.2 times
- Part D claims
- 15vs 3050% below
Medians across 1,046 general surgeons in Michigan with Dmand AI profiles that report each measure.
Dr. Diller's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diller and other general surgeons in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Timothy A. Diller's patients have a median age of 84
Across all payers, Dmand AI patient panel data puts Dr. Diller's median patient age at 84, with 100% women.
Dr. Diller's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 84
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Timothy A. Diller wrote 15 Medicare Part D claims in 2019
In 2019, Dr. Diller wrote 15 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $23 in total drug cost. In 2018, CMS named 80 claims across 4 drugs.
Dr. Diller's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 802019: 1581%
Drugs named by CMS: 1 in 2019, 4 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Timothy A. Diller received $29 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Diller from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $29.
Companies that paid Dr. Diller the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Timothy A. Diller'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 Dr. Timothy A. Diller
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. Timothy A. Diller's NPI number?
Dr. Timothy A. Diller's NPI number is 1205899481. It was assigned on April 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy A. Diller?
Dr. Timothy A. Diller is a general surgeon in Ludington, Michigan. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Timothy A. Diller practice?
Dr. Diller practices at One N Atkinson Drive, Ludington, MI 49431. Dr. Diller also practices at 1 N Atkinson Dr, Ludington, MI 49431. Dr. Diller's primary practice is Corewell Health Ludington Hospital in Ludington, Michigan, part of Corewell Health.
What is Dr. Timothy A. Diller's office phone number?
The practice phone on file for Dr. Diller is (231) 843-2591.
What is Dr. Timothy A. Diller's medical license number?
Dr. Diller holds Michigan license 4301044283, one of the licenses on file in 2 states.
Which states has Dr. Timothy A. Diller been licensed in?
Dmand AI has state licenses on file for Dr. Diller in Michigan and Arkansas.
Which hospitals is Dr. Timothy A. Diller affiliated with?
Dr. Diller practices at Corewell Health Ludington Hospital in Ludington, Michigan.
Does Dr. Timothy A. Diller accept Medicare?
Yes. CMS data shows Dr. Diller billed Medicare for 283 services in 2019.
What services does Dr. Timothy A. Diller bill to Medicare?
In 2019, Dr. Diller's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
What drugs does Dr. Timothy A. Diller prescribe most?
In 2019 Medicare Part D data, Dr. Diller's most prescribed drugs by claims were Tramadol HCl.
Has Dr. Timothy A. Diller received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Dr. Diller from 1 company from 2023 to 2023. The largest total came from Abbvie Inc.
How long has Dr. Timothy A. Diller been practicing?
Dr. Diller's NPI was assigned in 2006.
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