Jeff Chung, M.D.
NPI 1083684088 · Rheumatology Physician · Emerson, NJ
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeff Chung, M.D. is a Rheumatology Physician provider in Emerson, NJ (NPI 1083684088).
Provider details
- NPI number
- 1083684088
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA07780800 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
1,621 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 | 622 | $146 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 377 | $17 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 229 | $97 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 192 | $103 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 72 | $204 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
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 |
|---|---|---|
| Prednisone | 369 | 98 |
| Methotrexate Sodiumbrand: Methotrexate | 340 | 90 |
| Hydroxychloroquine Sulfate | 272 | 81 |
| Tramadol Hcl | 115 | 17 |
| Gabapentin | 104 | 22 |
| Allopurinol | 101 | 28 |
| Oxycodone Hcl | 88 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,752 across 97 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
- 2006-01-24
- Last updated
- 2012-12-11
Frequently asked questions
- What is Jeff Chung's NPI number?
- Jeff Chung's National Provider Identifier (NPI) is 1083684088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeff Chung's specialty?
- Jeff Chung is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeff Chung located?
- Jeff Chung's practice location on file with NPPES is 466 Old Hook Rd, Emerson, NJ 07630-1377.
- What is Jeff Chung's phone number?
- The practice phone number listed in the NPPES registry for Jeff Chung is (201) 967-8221.
- Does Jeff Chung accept Medicare?
- Jeff Chung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeff Chung's NPI active?
- Yes — Jeff Chung's NPI (1083684088) is active in the NPPES registry as of the last update on 2012-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.