NPPES file of Aug 9, 2026

Bonnie Y. Chien, MD

Orthopaedic Surgery Physician · New York, NY

Bonnie Y. Chien, MD is an orthopaedic surgery physician with a practice address in New York, New York, and NPI 1770964280, issued on Jun 11, 2015. Check the license (New York 308333, as entered in NPPES) on the NYS Education Department, Office of the Professions; 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
1770964280
Name
Bonnie Y. Chien
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License numbers
308333 NY
L-263063 MA
Self-reported in NPPES; status is on the state search
Practice location
622 W 168TH St PH 111130, New York, NY 10032
Phone
(212) 305-4587
Enumerated
Jun 11, 2015
Record last updated
Mar 14, 2023
Medicare enrollment
Enrolled (PECOS I20210412001492); accepts Medicare assignment
Medical or professional school
Stanford University School Of Medicine, 2015
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 622 W 168TH St PH 111130

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

  1. Robert Christian, MDOrthopaedic Surgery Physician1932595832

Verify Bonnie Y. Chien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 308333
    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 New York license search

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64% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

126 Medicare Part D claims for 56 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 41 claims were for opioids.

  1. Bonnie Chien126
  2. Specialty average346

Most prescribed

  1. Oxycodone Hcl30 claims
  2. Ibuprofen17 claims
  3. Diclofenac Sodium16 claims
  4. Cefadroxil12 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 MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score86.8
  2. Costnot scored (reweighted)
  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; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $5,114.38

30 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Bonnie Chien$5,114
  2. Specialty average$23,023

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

  1. Trustees OF Columbia University IN The City OF New YorkNew York, NY

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

Bonnie Y. Chien among 1,339 orthopaedic surgery physician records in New York

Bonnie Y. Chien, MD is one of 1,339 orthopaedic surgery physician records with a practice address in New York. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 84% of them.

  • NPI issued2015 · 84% of these records are older, 14% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2015 · median 2002 among the 819 with a school on file
  • Record last updated2023 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in New York

There are 1,339 orthopaedic surgery physician records in New York.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Christopher Ahmad, MDNew York, NY 100321598795445
  2. Louis Bigliani, MDNew York, NY 100321417983883
  3. Jeffrey Geller, M.D.New York, NY 100321083650758
  4. Justin Greisberg, MDNew York, NY 100321326063371
  5. Joshua Hyman, MDNew York, NY 100321023048972
  6. Charles Jobin, MDNew York, NY 100321770740342
  7. Lawrence Lenke, MDNew York, NY 100321841216165
  8. William Levine, MDNew York, NY 100321467493478

Common questions

What is Bonnie Y. Chien, MD's NPI number?

Bonnie Y. Chien, MD's National Provider Identifier (NPI) is 1770964280, issued on Jun 11, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Bonnie Y. Chien, MD located?

The NPPES record lists a practice address at 622 W 168TH St PH 111130, New York, NY, 10032. Phone: (212) 305-4587. Providers update this record themselves, so call before visiting.

How can I verify Bonnie Y. Chien, MD's license?

NPPES lists New York license number 308333, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Bonnie Y. Chien, MD prescribe under Medicare Part D?

In 2024, Bonnie Y. Chien, MD had 126 Medicare Part D claims for 56 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is Bonnie Y. Chien, MD's MIPS final score?

The 2023 MIPS final score is 100 of 100. 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.