Gregory Wei Chiang Woo, M.D.
Obstetrics & Gynecology Physician · Brockton, MA
Gregory Wei Chiang Woo, M.D. is an obstetrics & gynecology physician with a practice address in Brockton, Massachusetts, and NPI 1093910788, issued on Jun 20, 2007. Check the license (Massachusetts 248062, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory Wei Chiang Woo
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 248062 MA
Self-reported in NPPES; status is on the state search - Practice location
- 680 Centre St, Brockton, MA 02302
- Phone
- (508) 941-7000
- Enumerated
- Jun 20, 2007
- Record last updated
- Aug 31, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (508) 941-6480
- Medicare enrollment
- Enrolled (PECOS I20120402000605); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2007
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,127 in Massachusetts → Look up another NPI →
Also registered at 680 Centre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Wei Chiang Woo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 248062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
39 Medicare Part D claims for 13 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $113.74
1 payment: food and beverage; the largest payer was Henry Schein, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Brockton Neighborhood Health CenterBrockton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Wei Chiang Woo among 1,127 obstetrics & gynecology physician records in Massachusetts
Gregory Wei Chiang Woo, M.D. is one of 1,127 obstetrics & gynecology physician records with a practice address in Massachusetts. 73% 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 50% of them.
- NPI issued2007 · 50% of these records are older, 39% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2007 · median 2004 among the 715 with a school on file
- Record last updated2015 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Massachusetts
There are 1,127 obstetrics & gynecology physician records in Massachusetts.
All 1,127 in Massachusetts → Every provider in Brockton → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Brooke Bloom, M.D.Brockton, MA 023021124149364
- Harold Michlewitz, M.D.Brockton, MA 023021891723334
- Juan Richiusa, M.D.Brockton, MA 023021164614434
- Alvin ToBrockton, MA 023021083242465
- Marcia Waitzman, MDBrockton, MA 023021639176910
- Soheil Amin-Hanjani, M.D.Brockton, MA 023011598723512
- Angela Aslami, MDBrockton, MA 023011619943206
- Richard Burke, MDBrockton, MA 023011538459656
Common questions
What is Gregory Wei Chiang Woo, M.D.'s NPI number?
Gregory Wei Chiang Woo, M.D.'s National Provider Identifier (NPI) is 1093910788, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Wei Chiang Woo, M.D. located?
The NPPES record lists a practice address at 680 Centre St, Brockton, MA, 02302. Phone: (508) 941-7000. Providers update this record themselves, so call before visiting.
How can I verify Gregory Wei Chiang Woo, M.D.'s license?
NPPES lists Massachusetts license number 248062, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Wei Chiang Woo, M.D. prescribe under Medicare Part D?
In 2024, Gregory Wei Chiang Woo, M.D. had 39 Medicare Part D claims for 13 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
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.