Ly Thien Ma, M.D.
Anatomic Pathology & Clinical Pathology Physician · Phoenix, AZ
Ly Thien Ma, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Phoenix, Arizona, and NPI 1699069385, issued on May 31, 2011. Check the license (Arizona 47836, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ly Thien Ma
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 47836 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 424 S 56TH St Ste 120, Phoenix, AZ 85034
- Phone
- (602) 685-5211
- Enumerated
- May 31, 2011
- Record last updated
- Aug 4, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (602) 685-5325
- Medicaid ID
- 825075 AZ
- Medicare enrollment
- Enrolled (PECOS I20201113001854); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 324 in Arizona → Look up another NPI →
Also registered at 424 S 56TH St Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yousif Al Rubaye, MDAnatomic Pathology & Clinical Pathology Physician1952864761
- Steven Alder, MDAnatomic Pathology & Clinical Pathology Physician1164402582
- Maria Alzona, MDAnatomic Pathology & Clinical Pathology Physician1053391862
- Sapna Amin, MDAnatomic Pathology & Clinical Pathology Physician1891930582
- Qing Cao, MDAnatomic Pathology & Clinical Pathology Physician1912008897
- James Cason, MDAnatomic Pathology & Clinical Pathology Physician1265412670
Verify Ly Thien Ma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 47836Check 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): 81.8 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).
Industry payments in 2024: $130.59
1 payment: food and beverage; the largest payer was Madrigal Pharmaceuticals. The 2,607 providers of this specialty with any payment received $3,565.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Diagnostic Pathology Medical Group IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ly Thien Ma among 324 anatomic pathology & clinical pathology physician records in Arizona
Ly Thien Ma, M.D. is one of 324 anatomic pathology & clinical pathology physician records with a practice address in Arizona. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 70% of them.
- NPI issued2011 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated2006 · median 2001 among the 159 with a school on file
- Record last updated2020 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Arizona
There are 324 anatomic pathology & clinical pathology physician records in Arizona.
All 324 in Arizona → Every provider in Phoenix → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Steven Alder, MDPhoenix, AZ 850341164402582
- Maria Alzona, MDPhoenix, AZ 850341053391862
- Jonathan Bennett, M.D.Phoenix, AZ 850341073734794
- Qing Cao, MDPhoenix, AZ 850341912008897
- James Cason, MDPhoenix, AZ 850341265412670
- Thomas Colby, M.D.Phoenix, AZ 850341871575746
- Dhiren Joshipura, MDPhoenix, AZ 850341700855285
- Kevin Leslie, M.D.Phoenix, AZ 850341386626257
Common questions
What is Ly Thien Ma, M.D.'s NPI number?
Ly Thien Ma, M.D.'s National Provider Identifier (NPI) is 1699069385, issued on May 31, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ly Thien Ma, M.D. located?
The NPPES record lists a practice address at 424 S 56TH St Ste 120, Phoenix, AZ, 85034. Phone: (602) 685-5211. Providers update this record themselves, so call before visiting.
How can I verify Ly Thien Ma, M.D.'s license?
NPPES lists Arizona license number 47836, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Ly Thien Ma, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.8 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.