NPPES file of Aug 9, 2026

Naijie Guan, DMD

General Practice Dentistry · Mattapan, MA

Naijie Guan, DMD is a general practice dentistry with a practice address in Mattapan, Massachusetts, and NPI 1922156652, issued on Jan 8, 2007. Check the license (Massachusetts 21170, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1922156652
Name
Naijie Guan
Credential
DMD
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
21170 MA
Self-reported in NPPES; status is on the state search
Practice location
90 River St, Mattapan, MA 02126
Phone
(617) 698-5437
Enumerated
Jan 8, 2007
Record last updated
Dec 28, 2010 (not updated in 16 years: call before relying on the address or phone)
Medicaid ID
0205711 MA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 90 River St

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

  1. Randal Cole, DMDGeneral Practice Dentistry1306994603
  2. Mina Daniel, PHARMDPharmacist1962138891
  3. Minh Tam Hua, PHARMDPharmacist1891456067
  4. Courtney Iftiger, DPTPhysical Therapist1346104031
  5. Harith KamilDentist1629527437
  6. Rupal Karani, DMDGeneral Practice Dentistry1457374845

Verify Naijie Guan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license 21170
    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
Find the Massachusetts 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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2.5 times the Medicare Part D claims of the average general practice dentistry in 2024

205 Medicare Part D claims for 71 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Naijie Guan205
  2. Specialty average83

Most prescribed

  1. Chlorhexidine Gluconate74 claims
  2. Amoxicillin55 claims
  3. Sodium Fluoride Sensitive32 claims
  4. Prevident 5000 Sensitive24 claims
  5. Ibuprofen11 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.

Naijie Guan among 3,489 general practice dentistry records in Massachusetts

Naijie Guan, DMD is one of 3,489 general practice dentistry records with a practice address in Massachusetts. 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 2007, is newer than 37% of them.

  • NPI issued2007 · 37% of these records are older, 41% newer
  • In a Medicare fileYes · 58% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2010 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 general practice dentistry records list a practice address in Mattapan

They are 8 of the 256 NPPES records with a practice address in Mattapan, and 3,489 general practice dentistry records in Massachusetts.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Randal Cole, DMDMattapan, MA 021261306994603
  2. Rodica Grosu, DDSMattapan, MA 021261730750555
  3. Rupal Karani, DMDMattapan, MA 021261457374845
  4. Heather McDade, DMDMattapan, MA 021261730602509
  5. Youn Joo ParkMattapan, MA 021261386847382
  6. Dani StanboulyMattapan, MA 021261710688932
  7. E Whitworth, DDSMattapan, MA 021261992836209
  8. Marwah Al Jebahje, DMDDorchester, MA 021251881394591

Common questions

What is Naijie Guan, DMD's NPI number?

Naijie Guan, DMD's National Provider Identifier (NPI) is 1922156652, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Naijie Guan, DMD located?

The NPPES record lists a practice address at 90 River St, Mattapan, MA, 02126. Phone: (617) 698-5437. Providers update this record themselves, so call before visiting.

How can I verify Naijie Guan, DMD's license?

NPPES lists Massachusetts license number 21170, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Naijie Guan, DMD prescribe under Medicare Part D?

In 2024, Naijie Guan, DMD had 205 Medicare Part D claims for 71 beneficiaries; the average among general practice dentistry prescribers was 83. 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.