Dr. Larry Douglas Grubb, MD
- Medicare services, 2024
- 435
- Medicare patients, 2024
- 60
- Part D claims, 2024
- 18
- Hospital affiliations
- 3
- Industry payments
- $502
- Practice address
- 336 Deerfield Road, Boone, NC 28607
- Practice phone
- Call (828) 262-4100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grubb'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. Larry Douglas Grubb is a radiation oncologist in Boone, North Carolina
Dr. Grubb practices at Watauga Medical Center in Boone, North Carolina, part of University of North Carolina Health Care System.
Dr. Grubb's NPI, 1013947589, was assigned on July 3, 2006. Dr. Grubb graduated from University of South Carolina School of Medicine in 1983. Dr. Grubb holds South Carolina license 15990.
- NPI
- 1013947589NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860489945
- NPI enumeration date
- July 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (828) 262-4100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Larry Douglas Grubb practices at Watauga Medical Center in Boone, North Carolina
Dr. Grubb's primary practice is Watauga Medical Center, at 336 Deerfield Road, Boone, NC 28607 in Watauga County. The practice phone is (828) 262-4100.
- Watauga Medical Center336 Deerfield Road, Boone, NC 28607 · Watauga CountyPhone(828) 262-4100
Source: Dmand AI Affiliation Data
Dr. Larry Douglas Grubb is affiliated with 3 sites of care and 5 medical groups
Dr. Grubb's primary practice is Watauga Medical Center in Boone, North Carolina, part of University of North Carolina Health Care System. Dr. Grubb is also affiliated with Bon Secours St. Francis Downtown. The medical group on file is Watauga Medical Center. Dmand AI also links Dr. Grubb to 1 more hospital and 4 medical groups, each named with a free account. Dr. Grubb's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Larry Douglas Grubb's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grubb practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Watauga Medical Center | Available with a free account |
| +2 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Larry Douglas Grubb is one of 206 radiation oncologists in North Carolina
Radiation oncology is Dr. Grubb's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Grubb is licensed in South Carolina.
Specialties and state licenses
- Radiation oncology, South CarolinaPrimary
Radiation oncologists near Dr. Grubb
Counts of radiation oncologists 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. Larry Douglas Grubb billed Medicare for 435 services in 2024
CMS data shows 435 Medicare services from Dr. Grubb across 6 procedure codes in 2024, for 60 Medicare patients. Medicare paid $25,357 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grubb's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 7832024: 41847%
- Office and hospital visits
- 2023: 712024: 1776%
Dr. Grubb compared with the North Carolina median for radiation oncologists, 2024
- Dr. Grubb
- North Carolina median
- Medicare services
- 435vs 1,29266% below
- Medicare patients
- 60vs 18267% below
- Part D claims
- 12vs 4271% below
Medians across 199 radiation oncologists in North Carolina with Dmand AI profiles that report each measure.
Dr. Grubb'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grubb and other radiation oncologists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Larry Douglas Grubb treated 60 Medicare patients in 2024, average age 73
CMS counts 60 Medicare patients who saw Dr. Grubb in 2024. The largest group is 65 to 74, with 33 patients. 75% of them have cancer, and 75% have high cholesterol. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grubb's median patient age at 76, with 46% women.
Dr. Grubb's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Grubb's Medicare patients by sex, 2024
- Women2237%
- Men3863%
Chronic conditions among Dr. Grubb's Medicare patients, 2024
- Cancer75%
- High cholesterol75%
- High blood pressure63%
- Arthritis32%
- Diabetes27%
- Ischemic heart disease27%
- Tobacco use25%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grubb's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Larry Douglas Grubb wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Grubb wrote 18 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $86 in total drug cost. In 2023, CMS named 27 claims across 1 drug.
Dr. Grubb'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 272024: 1256%
Drugs named by CMS: 1 in 2024, 1 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
How Dr. Larry Douglas Grubb takes part in Medicare
Dr. Grubb accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Larry Douglas Grubb received $502 in industry payments from 2016 to 2025
CMS Open Payments shows 15 general payments to Dr. Grubb from 9 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Augmenix, Inc. paid the most, $170.
General payments to Dr. Grubb by program year, 2016 to 2025
Companies that paid Dr. Grubb the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Larry Douglas Grubb graduated from University of South Carolina School of Medicine
Dr. Grubb graduated from University of South Carolina School of Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Larry Douglas Grubb'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) |
| 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. Larry Douglas Grubb
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. Larry Douglas Grubb's NPI number?
Dr. Larry Douglas Grubb's NPI number is 1013947589. It was assigned on July 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Larry Douglas Grubb?
Dr. Larry Douglas Grubb is a radiation oncologist in Boone, North Carolina. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Larry Douglas Grubb practice?
Dr. Grubb practices at 336 Deerfield Road, Boone, NC 28607. Dr. Grubb's primary practice is Watauga Medical Center in Boone, North Carolina, part of University of North Carolina Health Care System. Dmand AI also links Dr. Grubb to 1 hospital and 4 medical groups.
What is Dr. Larry Douglas Grubb's office phone number?
The practice phone on file for Dr. Grubb is (828) 262-4100.
What is Dr. Larry Douglas Grubb's medical license number?
Dr. Grubb holds South Carolina license 15990.
Which hospitals is Dr. Larry Douglas Grubb affiliated with?
Dr. Grubb practices at Watauga Medical Center in Boone, North Carolina. Dr. Grubb is also affiliated with Bon Secours St. Francis Downtown. Dmand AI links Dr. Grubb to 1 more hospital.
What medical group is Dr. Larry Douglas Grubb part of?
Dr. Grubb is linked to Watauga Medical Center. Dmand AI links Dr. Grubb to 4 more medical groups.
Does Dr. Larry Douglas Grubb accept Medicare?
Yes. CMS data shows Dr. Grubb billed Medicare for 435 services in 2024, and Dr. Grubb accepts Medicare assignment.
How many Medicare patients does Dr. Larry Douglas Grubb see?
CMS counts 60 Medicare patients who saw Dr. Grubb in 2024, with an average age of 73.
What services does Dr. Larry Douglas Grubb bill to Medicare?
In 2024, Dr. Grubb's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and radiation oncology (77300).
Show 4 more questionsShow fewer questions
Where did Dr. Larry Douglas Grubb go to medical school?
Dr. Grubb graduated from University of South Carolina School of Medicine in 1983.
What drugs does Dr. Larry Douglas Grubb prescribe most?
In 2024 Medicare Part D data, Dr. Grubb's most prescribed drugs by claims were Tamsulosin HCl.
Has Dr. Larry Douglas Grubb received payments from drug or device companies?
CMS Open Payments shows $502 in general payments to Dr. Grubb from 9 companies from 2016 to 2025. The largest total came from Augmenix, Inc.
How long has Dr. Larry Douglas Grubb been practicing?
Dr. Grubb graduated from medical school in 1983, 43 years ago.
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