Physician Profile
Unclaimed ProfileAbout CHAFOS
Based in Green Brook, NJ, John Nick Chafos, MD is listed in the NPI registry under family practice. John graduated from Tufts University School of Medicine in 1988. John is also listed as specializing in emergency medicine and internal medicine. According to Medicare claims data, John cared for 2,002 Medicare patients across 5,896 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Chafos?
Dr. Chafos is a family practice in Green Brook, NJ. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “FAMILY PRACTICE”.
NPI registry
What is Dr. Chafos's address?
Dr. Chafos is listed at 257 RT 22 EAST, Green Brook, NJ 08812. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chafos?
The number on file is (732) 968-8832. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chafos's NPI number?
Dr. Chafos's National Provider Identifier is 1871673830. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Chafos train?
Dr. Chafos attended Tufts University School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chafos been practicing?
Dr. Chafos has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chafos perform?
According to Medicare billing data, Dr. Chafos performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 2 views and x-ray of lower and sacral spine, 2-3 views; provides treatments such as injection of drug or substance under skin or into muscle and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chafos confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chafos. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (732) 968-8832
- Email not available
Practice Locations
257 RT 22 EAST
Green Brook, NJ 08812
Procedures Most Often Billed to Medicare
5,896 services · 2,002 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
263 |
| X-ray of chest, 2 views | Imaging | 71046 |
86 |
| X-ray of lower and sacral spine, 2-3 views | Imaging | 72100 |
16 |
| X-ray of knee, 3 views | Imaging | 73562 |
15 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
348 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
96 |
| Influenza vaccine, trivalent derived from cell cultures | Treatment | 90661 |
16 |
| Administration of vaccine | Treatment | 90471 |
14 |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
2,021 |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
543 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other family practices in Green Brook 8
Same specialty, same city.
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1988 at Tufts University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NJ who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.