James Sieber, MD
NPI 1477535417 · Anesthesiology Physician · Morristown, NJ
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Sieber, MD is a Anesthesiology Physician provider in Morristown, NJ (NPI 1477535417).
Provider details
- NPI number
- 1477535417
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MA66694 (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
189 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 32 | $155 |
| Anesthesia for Other Procedure on Lower Abdomen00840 | 25 | $182 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 25 | $109 |
| Anesthesia for Other Procedure on Upper Abdomen00790 | 16 | $264 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 15 | $171 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 14 | $142 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$56 across 3 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
- 2005-11-16
- Last updated
- 2007-07-09
Frequently asked questions
- What is James Sieber's NPI number?
- James Sieber's National Provider Identifier (NPI) is 1477535417, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Sieber's specialty?
- James Sieber is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is James Sieber located?
- James Sieber's practice location on file with NPPES is 100 Madison Ave, Morristown, NJ 07960-6136.
- What is James Sieber's phone number?
- The practice phone number listed in the NPPES registry for James Sieber is (800) 991-9133.
- Does James Sieber accept Medicare?
- James Sieber is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Sieber's NPI active?
- Yes — James Sieber's NPI (1477535417) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.