Constantin Jaen, MD
NPI 1497285811 · Anesthesiology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Constantin Jaen, MD is a Anesthesiology Physician provider in Milwaukee, WI (NPI 1497285811).
Provider details
- NPI number
- 1497285811
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 74896-20 (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
9 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
34 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 | 23 | $95 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $76 |
Typical Medicare-allowed amounts for these services range $76–$95 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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
- 2017-06-18
- Last updated
- 2024-10-08
- Certified
- 2024-10-08
Frequently asked questions
- What is Constantin Jaen's NPI number?
- Constantin Jaen's National Provider Identifier (NPI) is 1497285811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Constantin Jaen's specialty?
- Constantin Jaen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Constantin Jaen located?
- Constantin Jaen's practice location on file with NPPES is 2301 N Lake Dr, Milwaukee, WI 53211-4508.
- What is Constantin Jaen's phone number?
- The practice phone number listed in the NPPES registry for Constantin Jaen is (414) 585-1000.
- Does Constantin Jaen accept Medicare?
- Constantin Jaen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Constantin Jaen's NPI active?
- Yes — Constantin Jaen's NPI (1497285811) is active in the NPPES registry as of the last update on 2024-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.