Nicholas Nissen, M.D.
NPI 1174507099 · Surgical Critical Care Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Nissen, M.D. is a Surgical Critical Care Physician provider in Los Angeles, CA (NPI 1174507099).
Provider details
- NPI number
- 1174507099
- Entity type
- Individual
- Primary specialty
- Surgical Critical Care PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G85301 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,466 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 296 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 261 | $70 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 222 | $84 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 179 | $53 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 155 | $104 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lipase/Protease/Amylasebrand: Creon | 146 | 45 |
| Pantoprazole Sodium | 40 | 18 |
| Prednisone | 12 | — |
| Lipase/Protease/Amylasebrand: Zenpep | 12 | — |
| Doravirinebrand: Pifeltro | 11 | — |
| Dolutegravir Sodiumbrand: Tivicay | 11 | — |
| Tenofovir Alafenamidebrand: Vemlidy |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,835 across 14 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
Additional practice locations (2)
- 8700 Beverly Blvd.Los Angeles, CA 90048-1865Phone: (310) 967-2641Fax: (310) 967-1800
- 8900 Beverly Blvd Fl 3West Hollywood, CA 90048-2438Phone: (310) 423-2641Fax: (310) 423-4552
Registry dates
- Enumerated
- 2005-12-05
- Last updated
- 2025-08-15
- Certified
- 2025-08-15
Frequently asked questions
- What is Nicholas Nissen's NPI number?
- Nicholas Nissen's National Provider Identifier (NPI) is 1174507099, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Nissen's specialty?
- Nicholas Nissen is listed in the NPPES registry with a primary specialty of Surgical Critical Care Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Nissen located?
- Nicholas Nissen's practice location on file with NPPES is 127 S San Vicente Blvd Fl 7, Los Angeles, CA 90048-3311.
- What is Nicholas Nissen's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Nissen is (310) 423-6746.
- Does Nicholas Nissen accept Medicare?
- Nicholas Nissen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Nissen's NPI active?
- Yes — Nicholas Nissen's NPI (1174507099) is active in the NPPES registry as of the last update on 2025-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.