Dr. Gregory Delano Haynes, MD
- Part D claims, 2024
- 27
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice locations
- 2
- Practice address
- 401 Mulberry St Sw Suite 206 Suite 206, Lenoir, NC 28645
- Practice phone
- Call (828) 572-1770
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gregory Haynes M.D. Internal Medicine, Gastroenterology
Physician office · Lenoir, North Carolina
Find Dr. Haynes' 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. Gregory Delano Haynes is a gastroenterologist in Marion, Virginia
Dr. Haynes practices at Gregory Haynes M.D. Internal Medicine, Gastroenterology in Lenoir, North Carolina.
Dr. Haynes' NPI, 1144330747, was assigned on August 30, 2006.
- NPI
- 1144330747NPI Registry (opens in a new tab)
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Practice phone
- (828) 572-1770
- 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. Gregory Delano Haynes practices in Lenoir and Marion
Dr. Haynes' primary practice is Gregory Haynes M.D. Internal Medicine, Gastroenterology, at 401 Mulberry St Sw Suite 206 Suite 206, Lenoir, NC 28645. The practice phone is (828) 572-1770. The NPI Registry lists Dr. Haynes' practice address as 245 Medical Park Dr, Marion, VA 24354.
- Gregory Haynes M.D. Internal Medicine, GastroenterologyPrimary401 Mulberry St Sw Suite 206 Suite 206, Lenoir, NC 28645Phone(828) 572-1770
- NPI Registry address245 Medical Park Dr, Marion, VA 24354 · Smyth CountyPhone(828) 572-1770
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Gregory Delano Haynes is affiliated with 1 site of care
Dr. Haynes' primary practice is Gregory Haynes M.D. Internal Medicine, Gastroenterology in Lenoir, North Carolina.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory Delano Haynes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Haynes practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gregory Haynes M.D. Internal Medicine, Gastroenterology | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Delano Haynes is one of 494 gastroenterologists in Virginia
Gastroenterology is Dr. Haynes' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Haynes has a license on file in North Carolina.
Specialties and state licenses
- Gastroenterology, North Carolina
Gastroenterologists near Dr. Haynes
Counts of gastroenterologists 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. Gregory Delano Haynes' patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Haynes' median patient age at 59, with 0% women.
Dr. Haynes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Gregory Delano Haynes wrote 27 Medicare Part D claims in 2024
In 2024, Dr. Haynes wrote 27 Medicare Part D claims. 93% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $140 in total drug cost. In 2021, CMS named 22 claims across 2 drugs.
Dr. Haynes' Part D claims by kind of drug, 2024
- Generic25 claims93%
- Brand-name and other2 claims7%
Dr. Haynes' most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 222022: 1150%
Drugs named by CMS: 1 in 2022, 2 in 2021.
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.
Sources for Dr. Gregory Delano Haynes'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 Data |
| 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)Medicare Part D Prescribers - by Provider (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. Gregory Delano Haynes
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. Gregory Delano Haynes' NPI number?
Dr. Gregory Delano Haynes' NPI number is 1144330747. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Delano Haynes?
Dr. Gregory Delano Haynes is a gastroenterologist in Marion, Virginia. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gregory Delano Haynes practice?
Dr. Haynes practices at 401 Mulberry St Sw Suite 206 Suite 206, Lenoir, NC 28645. Dr. Haynes also practices at 245 Medical Park Dr, Marion, VA 24354. Dr. Haynes' primary practice is Gregory Haynes M.D. Internal Medicine, Gastroenterology in Lenoir, North Carolina.
What is Dr. Gregory Delano Haynes' office phone number?
The practice phone on file for Dr. Haynes is (828) 572-1770.
What drugs does Dr. Gregory Delano Haynes prescribe most?
In 2022 Medicare Part D data, Dr. Haynes' most prescribed drugs by claims were Acetaminophen-Codeine.
How long has Dr. Gregory Delano Haynes been practicing?
Dr. Haynes' NPI was assigned in 2006.
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