David Glenn Markwell, PHD, LPC, NCC
Professional Counselor · Marietta, GA
David Glenn Markwell, PHD, LPC, NCC is a professional counselor with a practice address in Marietta, Georgia, and NPI 1336173541, issued on Jul 11, 2006. Check the license (Georgia 3565, as entered in NPPES) with the Georgia board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- David Glenn Markwell
- Credential
- PHD, LPC, NCC
- Primary taxonomy
- Professional Counselor 101YP2500X
- License number
- 3565 GA
Self-reported in NPPES; status is on the state search - Practice location
- 2440 Sandy Plains Road, Marietta, GA 30066
- Phone
- (770) 993-9700
- Enumerated
- Jul 11, 2006
- Record last updated
- Dec 12, 2025
- Fax
- (770) 993-9800
- Medicaid ID
- 376933122C GA
- Entity
- Type 1 · individual
8 nearest professional counselor records → All 6,496 in Georgia → Look up another NPI →
Verify David Glenn Markwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Georgia board licenses this profession
Search for license 3565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
David Glenn Markwell among 6,496 professional counselor records in Georgia
David Glenn Markwell, PHD, LPC, NCC is one of 6,496 professional counselor records with a practice address in Georgia. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 94% newer
- In a Medicare fileNo · 7% of these records are
- In the CMS Doctors and Clinicians fileNo · 13% of these records are
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YP2500X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
338 professional counselor records list a practice address in Marietta
They are 338 of the 6,900 NPPES records with a practice address in Marietta, and 6,496 professional counselor records in Georgia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 6,496 in Georgia → Every provider in Marietta → Professional Counselor nationwide →
The 8 professional counselor records with the nearest ZIP codes
- Sue Amacker, LPC, NCCMarietta, GA 300661487970174
- Faith Arkel, LPCMarietta, GA 300661265503114
- Gina Barthelemy-Morton, LPCMarietta, GA 300661568767895
- Ruth Bowen, EDS, LPC, NCCMarietta, GA 300661336406883
- Shannon Essex, M.A., LAPC, NCCMarietta, GA 300661164715496
- Amanda Marks, LAPCMarietta, GA 300661205127263
- James NewtonMarietta, GA 300661306106034
- Anthony Pearson, EDS., LPCMarietta, GA 300661306192281
Common questions
What is David Glenn Markwell, PHD, LPC, NCC's NPI number?
David Glenn Markwell, PHD, LPC, NCC's National Provider Identifier (NPI) is 1336173541, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Glenn Markwell, PHD, LPC, NCC located?
The NPPES record lists a practice address at 2440 Sandy Plains Road, Marietta, GA, 30066. Phone: (770) 993-9700. Providers update this record themselves, so call before visiting.
How can I verify David Glenn Markwell, PHD, LPC, NCC's license?
NPPES lists Georgia license number 3565, as entered by the provider. Search the Georgia board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.