Dr. Mark L. Withrow, MD
- Medicare services, 2024
- 34
- Medicare patients, 2024
- 30
- Part D claims, 2024
- 197
- Hospital affiliations
- 1
- Industry payments
- $2,532
- Practice address
- 105 W Stone Dr, Kingsport, TN 37660
- Practice phone
- Call (423) 392-6200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
HMG Primary Care at Medical Plaza
Therapy Group Practice · Kingsport, Tennessee
Find Dr. Withrow'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. Mark L. Withrow is an OB-GYN in Kingsport, Tennessee
Dr. Withrow practices at HMG Primary Care at Medical Plaza in Kingsport, Tennessee.
Dr. Withrow's NPI, 1255338547, was assigned on July 1, 2005. Dr. Withrow holds Tennessee license MD025903.
- NPI
- 1255338547NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133117633
- NPI enumeration date
- July 1, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (423) 392-6200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark L. Withrow practices at HMG Primary Care at Medical Plaza in Kingsport, Tennessee
Dr. Withrow's primary practice is HMG Primary Care at Medical Plaza, at 105 W Stone Dr, Kingsport, TN 37660. The practice phone is (423) 392-6200.
- HMG Primary Care at Medical Plaza105 W Stone Dr, Kingsport, TN 37660Phone(423) 392-6200
Source: Dmand AI Affiliation Data
Dr. Mark L. Withrow is affiliated with 5 sites of care and 3 medical groups
Dr. Withrow's primary practice is HMG Primary Care at Medical Plaza in Kingsport, Tennessee. Dr. Withrow is also affiliated with Bristol Regional Medical Center. The medical group on file is Holston Medical Group. Dmand AI also links Dr. Withrow to 3 more group practices and clinics and 2 medical groups, each named with a free account. Dr. Withrow's employer is on file too: a physical therapy & rehab clinic.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark L. Withrow's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Withrow practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HMG Primary Care at Medical Plaza | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark L. Withrow is one of 765 OB-GYNs in Tennessee
Obstetrics and gynecology is Dr. Withrow's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Withrow is licensed in Tennessee.
Specialties and state licenses
- Obstetrics and gynecology, TennesseePrimary
OB-GYNs near Dr. Withrow
Counts of OB-GYNs 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. Mark L. Withrow billed Medicare for 34 services in 2024
CMS data shows 34 Medicare services from Dr. Withrow across 2 procedure codes in 2024, all of them office visits, for 30 Medicare patients. Medicare paid $2,129 for them. Every service was in an office.
Dr. Withrow's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 182024: 3489%
- Other services
- 2023: 252024: 0100%
Dr. Withrow compared with the Tennessee median for OB-GYNs, 2024
- Dr. Withrow
- Tennessee median
- Medicare services
- 34vs 6850% below
- Medicare patients
- 30vs 4939% below
- Part D claims
- 86vs 4687% above
Medians across 694 OB-GYNs in Tennessee with Dmand AI profiles that report each measure.
Dr. Withrow'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. Withrow and other OB-GYNs in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark L. Withrow treated 30 Medicare patients in 2024, average age 70
CMS counts 30 Medicare patients who saw Dr. Withrow in 2024. The largest group is 75 to 84, with 12 patients. 63% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Withrow's median patient age at 33, with 99% women.
Dr. Withrow's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Withrow's Medicare patients, 2024
- High cholesterol63%
- High blood pressure60%
- Mood disorders43%
- Arthritis40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Withrow's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 33
Patient panel by sex, all payers
- Women99%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark L. Withrow wrote 197 Medicare Part D claims in 2024
In 2024, Dr. Withrow wrote 197 Medicare Part D claims for 60 patients. 83% of them were for generic drugs. CMS names the drug for 86 of them, across 4 drugs with 11 or more claims each, at $3,495 in total drug cost. In 2023, CMS named 92 claims across 5 drugs.
Dr. Withrow's Part D claims by kind of drug, 2024
- Generic163 claims83%
- Brand-name34 claims17%
Dr. Withrow'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: 922024: 867%
Drugs named by CMS: 4 in 2024, 5 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. Mark L. Withrow takes part in Medicare
Dr. Withrow accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of the uterus: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark L. Withrow received $2,532 in industry payments from 2016 to 2025
CMS Open Payments shows 146 general payments to Dr. Withrow from 27 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $621.
General payments to Dr. Withrow by program year, 2016 to 2025
General payments to Dr. Withrow by kind, 2016 to 2025
- Food and beverage$2,520100%
- Education$120%
Companies that paid Dr. Withrow the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark L. Withrow'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)Doctors and Clinicians Utilization Data (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. Mark L. Withrow
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. Mark L. Withrow's NPI number?
Dr. Mark L. Withrow's NPI number is 1255338547. It was assigned on July 1, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark L. Withrow?
Dr. Mark L. Withrow is an OB-GYN in Kingsport, Tennessee. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Mark L. Withrow practice?
Dr. Withrow practices at 105 W Stone Dr, Kingsport, TN 37660. Dr. Withrow's primary practice is HMG Primary Care at Medical Plaza in Kingsport, Tennessee. Dmand AI also links Dr. Withrow to 3 group practices and clinics and 2 medical groups.
What is Dr. Mark L. Withrow's office phone number?
The practice phone on file for Dr. Withrow is (423) 392-6200.
What is Dr. Mark L. Withrow's medical license number?
Dr. Withrow holds Tennessee license MD025903.
Which hospitals is Dr. Mark L. Withrow affiliated with?
Dr. Withrow is affiliated with Bristol Regional Medical Center.
What medical group is Dr. Mark L. Withrow part of?
Dr. Withrow is linked to Holston Medical Group. Dmand AI links Dr. Withrow to 2 more medical groups.
Does Dr. Mark L. Withrow accept Medicare?
Yes. CMS data shows Dr. Withrow billed Medicare for 34 services in 2024, and Dr. Withrow accepts Medicare assignment.
How many Medicare patients does Dr. Mark L. Withrow see?
CMS counts 30 Medicare patients who saw Dr. Withrow in 2024, with an average age of 70.
What services does Dr. Mark L. Withrow bill to Medicare?
In 2024, Dr. Withrow's most billed Medicare services were office visit, established patient (99213) and office visit, new patient (99203).
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What drugs does Dr. Mark L. Withrow prescribe most?
In 2024 Medicare Part D data, Dr. Withrow's most prescribed drugs by claims were Estradiol, Clobetasol Propionate and Medroxyprogesterone Acetate.
Has Dr. Mark L. Withrow received payments from drug or device companies?
CMS Open Payments shows $2,532 in general payments to Dr. Withrow from 27 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Mark L. Withrow been practicing?
Dr. Withrow graduated from medical school in 1991, 35 years ago.
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