NPPES file of Aug 9, 2026

Tjiauw-Ling Tan, MD

Psychiatry Physician · Hershey, PA

Tjiauw-Ling Tan, MD is a psychiatry physician with a practice address in Hershey, Pennsylvania, and NPI 1578517686, issued on May 22, 2006. Check the license (Pennsylvania MD035034L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578517686
Name
Tjiauw-Ling Tan
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
MD035034L PA
Self-reported in NPPES; status is on the state search
Practice location
500 University Dr, Hershey, PA 17033
Phone
(800) 233-4082
Enumerated
May 22, 2006
Record last updated
Feb 29, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicaid ID
0007692090001 PA
Medicare enrollment
Enrolled (PECOS I20100202000579); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 500 University Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Victor Abarca, CRNACertified Registered Nurse Anesthetist1003575853
  2. Aiza Abbas, MDStudent in an Organized Health Care Education/Training Program1164312500
  3. Fatemeh Abbasi, MDPulmonary Disease Physician1750878625
  4. Andrea Abbe, LDNRegistered Dietitian1366623795
  5. Mahdi Abdallah, MDStudent in an Organized Health Care Education/Training Program1497457360
  6. Ashraf Abdelhalim, MDAnesthesiology Physician1356931729

Verify Tjiauw-Ling Tan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD035034L
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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72% fewer Medicare Part D claims than the average psychiatry physician in 2024

278 Medicare Part D claims for 85 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Tjiauw-Ling Tan278
  2. Specialty average1,000

Most prescribed

  1. Lorazepam59 claims
  2. Clonazepam28 claims
  3. Alprazolam24 claims
  4. Dextroamphetamine-Amphetamine17 claims
  5. Dextroamphetamine-Amphet Er15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 71.8 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.

  1. Qualityout of 100 · 30% of the final score48.3
  2. Costout of 100 · 30%57.6
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. The Milton S Hershey Medical Center Physicians GroupHarrisburg, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Tjiauw-Ling Tan among 2,662 psychiatry physician records in Pennsylvania

Tjiauw-Ling Tan, MD is one of 2,662 psychiatry physician records with a practice address in Pennsylvania. 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 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 61% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated1961 · median 2003 among the 1,186 with a school on file
  • Record last updated2016 · 60% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

47 psychiatry physician records list a practice address in Hershey

They are 47 of the 3,972 NPPES records with a practice address in Hershey, and 2,662 psychiatry physician records in Pennsylvania.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Errol Aksu, MDHershey, PA 170331720032824
  2. Joseph Barber, MDHershey, PA 170331861449142
  3. Ailyn Diaz, MDHershey, PA 170331063424356
  4. Elaine Douglas, MDHershey, PA 170331558347369
  5. Lisa Foster, M.D.Hershey, PA 170331629014964
  6. Gregory Foster, M.D.Hershey, PA 170331609912070
  7. Mohammad Hameed, MDHershey, PA 170331467506600
  8. Barbara Kuhlengel, M.D.Hershey, PA 170331457358640

Common questions

What is Tjiauw-Ling Tan, MD's NPI number?

Tjiauw-Ling Tan, MD's National Provider Identifier (NPI) is 1578517686, issued on May 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Tjiauw-Ling Tan, MD located?

The NPPES record lists a practice address at 500 University Dr, Hershey, PA, 17033. Phone: (800) 233-4082. Providers update this record themselves, so call before visiting.

How can I verify Tjiauw-Ling Tan, MD's license?

NPPES lists Pennsylvania license number MD035034L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Tjiauw-Ling Tan, MD prescribe under Medicare Part D?

In 2024, Tjiauw-Ling Tan, MD had 278 Medicare Part D claims for 85 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.

What is Tjiauw-Ling Tan, MD's MIPS final score?

The 2023 MIPS final score is 71.8 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.