Brian Shaffer, MD
NPI 1447247689 · Internal Medicine Physician · Lawrenceville, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Shaffer, MD is a Internal Medicine Physician provider in Lawrenceville, NJ (NPI 1447247689).
Provider details
- NPI number
- 1447247689
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA05504600 (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
708 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 | 623 | $133 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 35 | $20 |
| Ultrasound Study of Arm and Leg Arteries93922 | 18 | $88 |
| Testing of Autonomic (sympathetic) Nervous System Function95923 | 17 | $131 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 15 | $232 |
Typical Medicare-allowed amounts for these services range $20–$232 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 100 | 28 |
| Lorazepam | 84 | 14 |
| Atorvastatin Calcium | 75 | 24 |
| Alprazolam | 56 | 11 |
| Sertraline Hcl | 53 | 14 |
| Rosuvastatin Calcium | 48 | 12 |
| Simvastatin | 43 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 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
- 2005-10-03
- Last updated
- 2015-04-02
Frequently asked questions
- What is Brian Shaffer's NPI number?
- Brian Shaffer's National Provider Identifier (NPI) is 1447247689, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Shaffer's specialty?
- Brian Shaffer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Shaffer located?
- Brian Shaffer's practice location on file with NPPES is 133 Franklin Corner Rd, Lawrenceville, NJ 08648-2531.
- What is Brian Shaffer's phone number?
- The practice phone number listed in the NPPES registry for Brian Shaffer is (609) 436-5900.
- Does Brian Shaffer accept Medicare?
- Brian Shaffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Shaffer's NPI active?
- Yes — Brian Shaffer's NPI (1447247689) is active in the NPPES registry as of the last update on 2015-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.