Dr. Gregory A. Gerlock, MD
- Medicare services, 2024
- 117
- Medicare patients, 2024
- 104
- Part D claims, 2024
- 109
- Hospital affiliations
- 3
- Industry payments
- $127
- Practice address
- 851 Locust Street, Rogersville, TN 37857
- Practice phone
- Call (423) 921-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gerlock's professional email, personal email and mobile number
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Dr. Gregory A. Gerlock is an emergency medicine physician in Rogersville, Tennessee
Dr. Gerlock practices at Hawkins County Memorial Hospital in Rogersville, Tennessee, part of Ballad Health.
Dr. Gerlock's NPI, 1114987740, was assigned on March 27, 2006. Dr. Gerlock graduated from Medical College of Georgia School of Medicine in 1989. Dr. Gerlock holds Tennessee license 20852.
- NPI
- 1114987740NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698725117
- NPI enumeration date
- March 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (423) 921-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory A. Gerlock practices at Hawkins County Memorial Hospital in Rogersville, Tennessee
Dr. Gerlock's primary practice is Hawkins County Memorial Hospital, at 851 Locust Street, Rogersville, TN 37857 in Hawkins County. The practice phone is (423) 921-7000.
- Hawkins County Memorial Hospital851 Locust Street, Rogersville, TN 37857 · Hawkins CountyPhone(423) 921-7000
Source: Dmand AI Affiliation Data
Dr. Gregory A. Gerlock is affiliated with 4 sites of care and 3 medical groups
Dr. Gerlock's primary practice is Hawkins County Memorial Hospital in Rogersville, Tennessee, part of Ballad Health. Dr. Gerlock is also affiliated with Bristol Regional Medical Center. The medical group on file is Ballad Health Medical Associates Family, Internal & Pediatric Medicine. Dmand AI also links Dr. Gerlock to 1 more hospital, 2 medical groups and 1 hospital outpatient department, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory A. Gerlock's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gerlock practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hawkins County Memorial Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory A. Gerlock is one of 1,088 emergency medicine physicians in Tennessee
Emergency medicine is Dr. Gerlock's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Gerlock is licensed in Tennessee.
Specialties and state licenses
- Emergency medicine, TennesseePrimary
Emergency medicine physicians near Dr. Gerlock
Counts of emergency medicine physicians 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 A. Gerlock billed Medicare for 117 services in 2024
CMS data shows 117 Medicare services from Dr. Gerlock across 3 procedure codes in 2024, for 104 Medicare patients. Medicare paid $8,776 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gerlock's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 912024: 865%
- Tests and treatments
- 2023: 332024: 316%
Dr. Gerlock compared with the Tennessee median for emergency medicine physicians, 2024
- Dr. Gerlock
- Tennessee median
- Medicare services
- 117vs 26656% below
- Medicare patients
- 104vs 25760% below
- Part D claims
- 45vs 9352% below
Medians across 1,079 emergency medicine physicians in Tennessee with Dmand AI profiles that report each measure.
Dr. Gerlock'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. Gerlock and other emergency medicine physicians in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Gerlock treated 104 Medicare patients in 2024, average age 75
CMS counts 104 Medicare patients who saw Dr. Gerlock in 2024. The largest group is 75 to 84, with 39 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 28% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gerlock's median patient age at 69, with 59% women.
Dr. Gerlock's Medicare patients by age, 2024
Dr. Gerlock's Medicare patients by sex, 2024
- Women5351%
- Men5149%
Chronic conditions among Dr. Gerlock's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Arthritis45%
- COPD35%
- Chronic kidney disease35%
- Mood disorders34%
- Diabetes33%
- Anxiety31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gerlock's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory A. Gerlock wrote 109 Medicare Part D claims in 2024
In 2024, Dr. Gerlock wrote 109 Medicare Part D claims for 88 patients. 98% of them were for generic drugs. CMS names the drug for 45 of them, across 3 drugs with 11 or more claims each, at $387 in total drug cost. In 2023, CMS named 73 claims across 4 drugs.
Dr. Gerlock's Part D claims by kind of drug, 2024
- Generic107 claims98%
- Brand-name and other2 claims2%
Dr. Gerlock'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.
Drug classes CMS tracks in Dr. Gerlock's Part D claims, 2024
- Opioids20%22 of 109 claims
- Antibiotics42%46 of 109 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 732024: 4538%
Drugs named by CMS: 3 in 2024, 4 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. Gregory A. Gerlock takes part in Medicare
Dr. Gerlock 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. Gregory A. Gerlock received $127 in industry payments from 2016 to 2019
CMS Open Payments shows 8 general payments to Dr. Gerlock from 6 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. UCB, Inc. paid the most, $33.
General payments to Dr. Gerlock by program year, 2016 to 2019
Companies that paid Dr. Gerlock the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory A. Gerlock graduated from Medical College of Georgia School of Medicine
Dr. Gerlock graduated from Medical College of Georgia School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory A. Gerlock'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. Gregory A. Gerlock
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 A. Gerlock's NPI number?
Dr. Gregory A. Gerlock's NPI number is 1114987740. It was assigned on March 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory A. Gerlock?
Dr. Gregory A. Gerlock is an emergency medicine physician in Rogersville, Tennessee. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Gregory A. Gerlock practice?
Dr. Gerlock practices at 851 Locust Street, Rogersville, TN 37857. Dr. Gerlock's primary practice is Hawkins County Memorial Hospital in Rogersville, Tennessee, part of Ballad Health. Dmand AI also links Dr. Gerlock to 1 hospital, 2 medical groups and 1 hospital outpatient department.
What is Dr. Gregory A. Gerlock's office phone number?
The practice phone on file for Dr. Gerlock is (423) 921-7000.
What is Dr. Gregory A. Gerlock's medical license number?
Dr. Gerlock holds Tennessee license 20852.
Which hospitals is Dr. Gregory A. Gerlock affiliated with?
Dr. Gerlock practices at Hawkins County Memorial Hospital in Rogersville, Tennessee. Dr. Gerlock is also affiliated with Bristol Regional Medical Center. Dmand AI links Dr. Gerlock to 1 more hospital.
What medical group is Dr. Gregory A. Gerlock part of?
Dr. Gerlock is linked to Ballad Health Medical Associates Family, Internal & Pediatric Medicine. Dmand AI links Dr. Gerlock to 2 more medical groups.
Does Dr. Gregory A. Gerlock accept Medicare?
Yes. CMS data shows Dr. Gerlock billed Medicare for 117 services in 2024, and Dr. Gerlock accepts Medicare assignment.
How many Medicare patients does Dr. Gregory A. Gerlock see?
CMS counts 104 Medicare patients who saw Dr. Gerlock in 2024, with an average age of 75.
What services does Dr. Gregory A. Gerlock bill to Medicare?
In 2024, Dr. Gerlock's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and heart test or procedure (93010).
Show 4 more questionsShow fewer questions
Where did Dr. Gregory A. Gerlock go to medical school?
Dr. Gerlock graduated from Medical College of Georgia School of Medicine in 1989.
What drugs does Dr. Gregory A. Gerlock prescribe most?
In 2024 Medicare Part D data, Dr. Gerlock's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Amoxicillin-Clavulanate Potass and Cephalexin.
Has Dr. Gregory A. Gerlock received payments from drug or device companies?
CMS Open Payments shows $127 in general payments to Dr. Gerlock from 6 companies from 2016 to 2019. The largest total came from UCB, Inc.
How long has Dr. Gregory A. Gerlock been practicing?
Dr. Gerlock graduated from medical school in 1989, 37 years ago.
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