Janet Jang, MD
NPI 1699116939 · Endocrinology, Diabetes & Metabolism Physician · Lynn, MA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janet Jang, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Lynn, MA (NPI 1699116939).
Provider details
- NPI number
- 1699116939
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125064192 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
640 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 400 | $102 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 74 | $148 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $133 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 43 | $15 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 20 | $78 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Empagliflozinbrand: Jardiance | 362 | 70 |
| Semaglutidebrand: Ozempic | 324 | 66 |
| Levothyroxine Sodium | 320 | 86 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 238 | 56 |
| Metformin Hcl | 220 | 59 |
| Dulaglutidebrand: Trulicity | 217 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$151 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-15
- Last updated
- 2022-04-25
- Certified
- 2022-04-24
Frequently asked questions
- What is Janet Jang's NPI number?
- Janet Jang's National Provider Identifier (NPI) is 1699116939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Jang's specialty?
- Janet Jang is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Janet Jang located?
- Janet Jang's practice location on file with NPPES is 480 Lynnfield St Ste 2, Lynn, MA 01904-1419.
- What is Janet Jang's phone number?
- The practice phone number listed in the NPPES registry for Janet Jang is (781) 593-3400.
- Does Janet Jang accept Medicare?
- Janet Jang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janet Jang's NPI active?
- Yes — Janet Jang's NPI (1699116939) is active in the NPPES registry as of the last update on 2022-04-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.