Dr. Mark L. Douglas, DO
- Medicare services, 2024
- 519
- Medicare patients, 2024
- 182
- Part D claims, 2024
- 6,999
- Hospital affiliations
- 2
- Industry payments
- $5,272
- Practice address
- 5098 Washington W St, Charleston, WV 25313
- Practice phone
- Call (304) 776-5594
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mark L. Douglas, DO
Charleston, West Virginia
Find Dr. Douglas' 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. Douglas is an internist in Charleston, West Virginia
Dr. Douglas practices at Mark L. Douglas, DO in Charleston, West Virginia.
Dr. Douglas' NPI, 1306974464, was assigned on March 1, 2007. Dr. Douglas graduated from West Virginia School of Osteopathic Medicine in 1989. Dr. Douglas holds West Virginia license 1390.
- NPI
- 1306974464NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941114631
- NPI enumeration date
- March 1, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (304) 776-5594
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark L. Douglas practices at Mark L. Douglas, DO in Charleston, West Virginia
Dr. Douglas' primary practice is Mark L. Douglas, DO, at 5098 Washington W St, Charleston, WV 25313 in Kanawha County. The practice phone is (304) 776-5594.
- Mark L. Douglas, DO5098 Washington W St, Charleston, WV 25313 · Kanawha CountyPhone(304) 776-5594
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark L. Douglas is affiliated with 4 sites of care
Dr. Douglas' primary practice is Mark L. Douglas, DO in Charleston, West Virginia. Dr. Douglas is also affiliated with Charleston Area Medical Center General Hospital. Dmand AI also links Dr. Douglas to 1 more hospital and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark L. Douglas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Douglas practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mark L. Douglas, DO | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark L. Douglas is one of 718 internists in West Virginia
Internal medicine is Dr. Douglas' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Douglas is licensed in West Virginia.
Specialties and state licenses
- Internal medicine, West VirginiaPrimary
Internists near Dr. Douglas
Counts of internists 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. Douglas billed Medicare for 519 services in 2024
CMS data shows 519 Medicare services from Dr. Douglas across 10 procedure codes in 2024, for 182 Medicare patients. Medicare paid $37,226 for them. Every service was in an office.
Dr. Douglas' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2032024: 2011%
- Other services
- 2023: 1962024: 2002%
- Lab and pathology
- 2023: 592024: 548%
- Tests and treatments
- 2023: 282024: 3525%
- Surgery
- 2023: 412024: 2929%
Dr. Douglas compared with the West Virginia median for internists, 2024
- Dr. Douglas
- West Virginia median
- Medicare services
- 519vs 37240% above
- Medicare patients
- 182vs 175Close to median
- Part D claims
- 6,379vs 19233.2 times
Medians across 682 internists in West Virginia with Dmand AI profiles that report each measure.
Dr. Douglas' 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.
Need commercial claims for Dr. Douglas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Douglas and other internists in West Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark L. Douglas treated 182 Medicare patients in 2024, average age 76
CMS counts 182 Medicare patients who saw Dr. Douglas in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Douglas' median patient age at 74, with 45% women.
Dr. Douglas' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Douglas' Medicare patients by sex, 2024
- Women7742%
- Men10558%
Chronic conditions among Dr. Douglas' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Ischemic heart disease38%
- Chronic kidney disease33%
- Diabetes33%
- Anxiety21%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Douglas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark L. Douglas wrote 6,999 Medicare Part D claims in 2024
In 2024, Dr. Douglas wrote 6,999 Medicare Part D claims for 393 patients. 87% of them were for generic drugs. CMS names the drug for 6,379 of them, across 122 drugs with 11 or more claims each, at $699,229 in total drug cost. In 2023, CMS named 6,286 claims across 127 drugs.
Dr. Douglas' Part D claims by kind of drug, 2024
- Generic6,080 claims87%
- Brand-name826 claims12%
- Other93 claims1%
Dr. Douglas' 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. Douglas' Part D claims, 2024
- Opioids7%507 of 6,999 claims
- Antibiotics3%197 of 6,999 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: 6,2862024: 6,3791%
Drugs named by CMS: 122 in 2024, 127 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. Douglas takes part in Medicare
Dr. Douglas 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. Mark L. Douglas received $5,272 in industry payments from 2016 to 2025
CMS Open Payments shows 364 general payments to Dr. Douglas from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Novo Nordisk Inc paid the most, $875.
General payments to Dr. Douglas by program year, 2016 to 2025
General payments to Dr. Douglas by kind, 2016 to 2025
- Food and beverage$5,18398%
- Education$892%
Companies that paid Dr. Douglas 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. Mark L. Douglas graduated from West Virginia School of Osteopathic Medicine
Dr. Douglas graduated from West Virginia School of Osteopathic Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark L. Douglas'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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. Mark L. Douglas
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. Douglas' NPI number?
Dr. Mark L. Douglas' NPI number is 1306974464. It was assigned on March 1, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark L. Douglas?
Dr. Mark L. Douglas is an internist in Charleston, West Virginia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark L. Douglas practice?
Dr. Douglas practices at 5098 Washington W St, Charleston, WV 25313. Dr. Douglas' primary practice is Mark L. Douglas, DO in Charleston, West Virginia. Dmand AI also links Dr. Douglas to 1 hospital and 1 physician office.
What is Dr. Mark L. Douglas' office phone number?
The practice phone on file for Dr. Douglas is (304) 776-5594.
What is Dr. Mark L. Douglas' medical license number?
Dr. Douglas holds West Virginia license 1390.
Which hospitals is Dr. Mark L. Douglas affiliated with?
Dr. Douglas is affiliated with Charleston Area Medical Center General Hospital. Dmand AI links Dr. Douglas to 1 more hospital.
Does Dr. Mark L. Douglas accept Medicare?
Yes. CMS data shows Dr. Douglas billed Medicare for 519 services in 2024, and Dr. Douglas accepts Medicare assignment.
How many Medicare patients does Dr. Mark L. Douglas see?
CMS counts 182 Medicare patients who saw Dr. Douglas in 2024, with an average age of 76.
What services does Dr. Mark L. Douglas bill to Medicare?
In 2024, Dr. Douglas' most billed Medicare services were medicare service (G0439), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Mark L. Douglas go to medical school?
Dr. Douglas graduated from West Virginia School of Osteopathic Medicine in 1989.
Show 3 more questionsShow fewer questions
What drugs does Dr. Mark L. Douglas prescribe most?
In 2024 Medicare Part D data, Dr. Douglas' most prescribed drugs by claims were Hydrocodone-Acetaminophen, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Mark L. Douglas received payments from drug or device companies?
CMS Open Payments shows $5,272 in general payments to Dr. Douglas from 22 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Mark L. Douglas been practicing?
Dr. Douglas graduated from medical school in 1989, 37 years ago.
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