Robert Massop, D.O.
NPI 1437546470 · Anesthesiology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Massop, D.O. is a Anesthesiology Physician provider in Madison, WI (NPI 1437546470).
Provider details
- NPI number
- 1437546470
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 66536 (WI)
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
11 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
116 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) |
|---|---|---|
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 25 | $40 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 21 | $51 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 17 | $64 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 16 | $181 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 14 | $59 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 12 | $86 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$59 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
- 2015-04-16
- Last updated
- 2017-02-14
Frequently asked questions
- What is Robert Massop's NPI number?
- Robert Massop's National Provider Identifier (NPI) is 1437546470, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Massop's specialty?
- Robert Massop is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Massop located?
- Robert Massop's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792.
- What is Robert Massop's phone number?
- The practice phone number listed in the NPPES registry for Robert Massop is (608) 263-8114.
- Does Robert Massop accept Medicare?
- Robert Massop is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Massop's NPI active?
- Yes — Robert Massop's NPI (1437546470) is active in the NPPES registry as of the last update on 2017-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.