Ryan Giammanco Markus, DPT
Physical Therapist · Austell, GA
Ryan Giammanco Markus, DPT is a physical therapist with a practice address in Austell, Georgia, and NPI 1588827349, issued on Jul 2, 2008. Check the license (Georgia PT9350, as entered in NPPES) with the Georgia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ryan Giammanco Markus
- Credential
- DPT
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- PT9350 GA
Self-reported in NPPES; status is on the state search - Practice location
- 3672 Marathon Cir, Austell, GA 30106
- Phone
- (770) 944-3303
- Enumerated
- Jul 2, 2008
- Record last updated
- Feb 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (770) 944-0285
- Medicare enrollment
- Enrolled (PECOS I20080808000472); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 6,579 in Georgia → Look up another NPI →
Also registered at 3672 Marathon Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mark Duffield, DOOrthopaedic Surgery Physician1881697803
- Donald Fowler, MDOrthopaedic Surgery Physician1912167180
- Bria FullertonPhysical Therapist1588271258
Verify Ryan Giammanco Markus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Georgia board licenses this profession
Search for license PT9350Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 90.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Piedmont Orthopedics, LLCAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Giammanco Markus among 6,579 physical therapist records in Georgia
Ryan Giammanco Markus, DPT is one of 6,579 physical therapist records with a practice address in Georgia. 33% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 24% of them.
- NPI issued2008 · 24% of these records are older, 73% newer
- In a Medicare fileYes · 33% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated2008 · median 2017 among the 2,300 with a school on file
- Record last updated2017 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 physical therapist records list a practice address in Austell
They are 42 of the 1,056 NPPES records with a practice address in Austell, and 6,579 physical therapist records in Georgia.
All 6,579 in Georgia → Every provider in Austell → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- John Akers, PTAustell, GA 301061609880384
- Josha CrossenAustell, GA 301061346443389
- Christina Davia, PTAustell, GA 301061306959994
- Kristi Dean, THERAPY DIR. IAustell, GA 301061104942077
- Nichole Edwards, MSPTAustell, GA 301061689738528
- Rebecca Filson, DPTAustell, GA 301061609039510
- Fatima German, PTAustell, GA 301061558436089
- Adel GhaffariAustell, GA 301061619986650
Common questions
What is Ryan Giammanco Markus, DPT's NPI number?
Ryan Giammanco Markus, DPT's National Provider Identifier (NPI) is 1588827349, issued on Jul 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Giammanco Markus, DPT located?
The NPPES record lists a practice address at 3672 Marathon Cir, Austell, GA, 30106. Phone: (770) 944-3303. Providers update this record themselves, so call before visiting.
How can I verify Ryan Giammanco Markus, DPT's license?
NPPES lists Georgia license number PT9350, as entered by the provider. Search the Georgia board that licenses this profession; the NPPES record confirms identity only.
What is Ryan Giammanco Markus, DPT's MIPS final score?
The 2023 MIPS final score is 90.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.