Andrew D. Diederich, MD
Psychiatry Physician · Dallas, TX
Andrew D. Diederich, MD is a psychiatry physician with a practice address in Dallas, Texas, and NPI 1679788137, issued on May 10, 2007. Check the license (Texas N6257, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Andrew D. Diederich
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- N6257 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1935 Medical District Dr, Dallas, TX 75235
- Phone
- (214) 456-8899
- Enumerated
- May 10, 2007
- Record last updated
- Sep 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (214) 456-5986
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 3,318 in Texas → Look up another NPI →
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Verify Andrew D. Diederich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N6257Check 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): 74.6 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).
Andrew D. Diederich among 3,318 psychiatry physician records in Texas
Andrew D. Diederich, MD is one of 3,318 psychiatry physician records with a practice address in Texas. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 51% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2020 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
419 psychiatry physician records list a practice address in Dallas
They are 419 of the 36,304 NPPES records with a practice address in Dallas, and 3,318 psychiatry physician records in Texas.
All 3,318 in Texas → Every provider in Dallas → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- James Baker, MDDallas, TX 752351487650156
- Margaret Balfour, MD, PHDDallas, TX 752351912101239
- Nikhil Dhawan, MDDallas, TX 752351215192174
- Lakeisha Green, MDDallas, TX 752351578729752
- Somsri Griffin, MDDallas, TX 752351841258878
- Dona Keith, MDDallas, TX 752351366401838
- Warren Lee, MDDallas, TX 752351720288392
- Kapila Marambage, MDDallas, TX 752351467613836
Common questions
What is Andrew D. Diederich, MD's NPI number?
Andrew D. Diederich, MD's National Provider Identifier (NPI) is 1679788137, issued on May 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Andrew D. Diederich, MD located?
The NPPES record lists a practice address at 1935 Medical District Dr, Dallas, TX, 75235. Phone: (214) 456-8899. Providers update this record themselves, so call before visiting.
How can I verify Andrew D. Diederich, MD's license?
NPPES lists Texas license number N6257, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Andrew D. Diederich, MD's MIPS final score?
The 2023 MIPS final score is 74.6 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.