Dr. Thomas J. Grube, MD
- Medicare services, 2022
- 3,340
- Part D claims, 2023
- 50
- Publications
- 3
- Industry payments
- $512
- Affiliated sites
- 1
- Practice address
- 107 3rd Ave Nw, Mandan, ND 58554-3129
- Practice phone
- Call (701) 751-2131
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Audrey E. Fields, O.D. & Associates
Eye care practice · Mandan, North Dakota
Find Dr. Grube'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 J. Grube is an ophthalmologist in Mandan, North Dakota
Dr. Grube practices at Audrey E. Fields, O.D. & Associates in Mandan, North Dakota.
Dr. Grube's NPI, 1659328516, was assigned on May 27, 2006. Dr. Grube graduated from Sanford School of Medicine of University of South Dakota in 1997. Dr. Grube holds North Dakota license 9201.
- NPI
- 1659328516NPI Registry (opens in a new tab)
- NPI enumeration date
- May 27, 2006
- NPI status
- Active
- Practice phone
- (701) 751-2131
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas J. Grube practices at Audrey E. Fields, O.D. & Associates in Mandan, North Dakota
Dr. Grube's primary practice is Audrey E. Fields, O.D. & Associates, at 107 3rd Ave Nw, Mandan, ND 58554-3129. The practice phone is (701) 751-2131.
- Audrey E. Fields, O.D. & Associates107 3rd Ave Nw, Mandan, ND 58554-3129Phone(701) 751-2131
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas J. Grube is affiliated with 1 site of care and 1 medical group
Dr. Grube's primary practice is Audrey E. Fields, O.D. & Associates in Mandan, North Dakota. Dmand AI also links Dr. Grube to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas J. Grube's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grube practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Audrey E. Fields, O.D. & Associates | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas J. Grube is one of 42 ophthalmologists in North Dakota
Ophthalmology is Dr. Grube's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Grube is licensed in North Dakota.
Specialties and state licenses
- Ophthalmology, North DakotaPrimary
Ophthalmologists near Dr. Grube
Counts of ophthalmologists 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 J. Grube billed Medicare for 3,340 services in 2022
CMS data shows 3,340 Medicare services from Dr. Grube across 12 procedure codes in 2022. Medicare paid $449,650 for them. Every service was in an office.
Dr. Grube's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Tests and treatments
- 2021: 3,8012022: 1,35764%
- Office and hospital visits
- 2021: 2,2692022: 98157%
- Drugs given in the office
- 2021: 1,6872022: 64562%
- Surgery
- 2021: 9022022: 31665%
- Imaging
- 2021: 1022022: 4160%
Dr. Grube compared with the North Dakota median for ophthalmologists, 2022
- Dr. Grube
- North Dakota median
- Medicare services
- 3,340vs 2,02465% above
- Part D claims
- 50vs 31684% below
Medians across 44 ophthalmologists in North Dakota with Dmand AI profiles that report each measure.
Dr. Grube's most billed Medicare procedure codes, 2022
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. Grube?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grube and other ophthalmologists in North Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas J. Grube's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Grube's median patient age at 75, with 62% women.
Dr. Grube'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
- Women62%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Thomas J. Grube wrote 50 Medicare Part D claims in 2023
In 2023, Dr. Grube wrote 50 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $527 in total drug cost. In 2022, CMS named 807 claims across 10 drugs.
Dr. Grube's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 8072023: 5094%
Drugs named by CMS: 1 in 2023, 10 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Thomas J. Grube has 3 publications on record
Dmand AI links 3 papers to Dr. Grube, published from 2013 to 2017. Dr. Grube's most frequent co-authors are Saranya C. Balasubramaniam, MD, Harry W. Flynn, MD and Tania Marie Gonzalez Santiago, MD.
Dr. Grube's most frequent co-authors
- Saranya C. Balasubramaniam, MD1 shared paper
- Harry W. Flynn, MD1 shared paper
- Tania Marie Gonzalez Santiago, MD1 shared paper
Recent publications by Dr. Grube
Retin Cases Brief Rep
See who Dr. Grube researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grube works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas J. Grube received $512 in industry payments from 2016 to 2022
CMS Open Payments shows 32 general payments to Dr. Grube from 7 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $193.
General payments to Dr. Grube by program year, 2016 to 2022
Companies that paid Dr. Grube the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas J. Grube graduated from Sanford School of Medicine of University of South Dakota
Dr. Grube graduated from Sanford School of Medicine of University of South Dakota in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas J. Grube'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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) |
| 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. Thomas J. Grube
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 J. Grube's NPI number?
Dr. Thomas J. Grube's NPI number is 1659328516. It was assigned on May 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas J. Grube?
Dr. Thomas J. Grube is an ophthalmologist in Mandan, North Dakota. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Thomas J. Grube practice?
Dr. Grube practices at 107 3rd Ave Nw, Mandan, ND 58554-3129. Dr. Grube's primary practice is Audrey E. Fields, O.D. & Associates in Mandan, North Dakota. Dmand AI also links Dr. Grube to 1 medical group.
What is Dr. Thomas J. Grube's office phone number?
The practice phone on file for Dr. Grube is (701) 751-2131.
What is Dr. Thomas J. Grube's medical license number?
Dr. Grube holds North Dakota license 9201.
Does Dr. Thomas J. Grube accept Medicare?
Yes. CMS data shows Dr. Grube billed Medicare for 3,340 services in 2022.
What services does Dr. Thomas J. Grube bill to Medicare?
In 2022, Dr. Grube's most billed Medicare services were eye exam or test (92134), office visit, established patient (99213) and injected or infused drug (J0178).
Where did Dr. Thomas J. Grube go to medical school?
Dr. Grube graduated from Sanford School of Medicine of University of South Dakota in 1997.
What drugs does Dr. Thomas J. Grube prescribe most?
In 2023 Medicare Part D data, Dr. Grube's most prescribed drugs by claims were Timolol Maleate.
Has Dr. Thomas J. Grube received payments from drug or device companies?
CMS Open Payments shows $512 in general payments to Dr. Grube from 7 companies from 2016 to 2022. The largest total came from Genentech, Inc.
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How long has Dr. Thomas J. Grube been practicing?
Dr. Grube graduated from medical school in 1997, 29 years ago.
Does Dr. Thomas J. Grube do research?
Dmand AI links 3 publications to Dr. Grube, published from 2013 to 2017.
Who does Dr. Thomas J. Grube publish with?
Dr. Grube's most frequent co-authors are Saranya C. Balasubramaniam, MD (1 shared paper), Harry W. Flynn, MD (1 shared paper) and Tania Marie Gonzalez Santiago, MD (1 shared paper).
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