Physician Profile
Unclaimed ProfileAbout SHAFFER
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Education & Training
Areas of Expertise
Common questions
What does Dr. Shaffer specialise in?
Dr. Shaffer is an internal medicine in Lawrenceville, NJ. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Shaffer located?
Dr. Shaffer is listed at 133 FRANKLIN CORNER RD 2ND FL, Lawrenceville, NJ 08648. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Shaffer's phone number?
The number on file is (609) 436-5900. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Shaffer?
Dr. Shaffer's National Provider Identifier is 1447247689. 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. Shaffer go to medical school?
Dr. Shaffer attended Other, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Shaffer have?
Dr. Shaffer has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Shaffer do most often?
According to Medicare billing data, Dr. Shaffer provides treatments such as ultrasound study of arm and leg arteries and testing of autonomic nervous system function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Shaffer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Shaffer. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (609) 436-5900
- Email not available
Practice Locations
133 FRANKLIN CORNER RD 2ND FL
Lawrenceville, NJ 08648
Procedures Most Often Billed to Medicare
708 services · 266 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ultrasound study of arm and leg arteries | Treatment | 93922 |
18 |
| Testing of autonomic (sympathetic) nervous system function | Treatment | 95923 |
17 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
623 |
| Annual depression screening, 5 to 15 minutes | Billing code | G0444 |
35 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
15 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other internal medicines in Lawrenceville 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound study of arm and leg arteries 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.