Nathan Applegren, M.D.
NPI 1023679651 · Anesthesiology Physician · Greenwood Village, CO
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Applegren, M.D. is a Anesthesiology Physician provider in Greenwood Village, CO (NPI 1023679651).
Provider details
- NPI number
- 1023679651
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2019022908 (MO)
Specialties & taxonomies
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
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
142 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 Procedure for Total Knee Joint Replacement01402 | 31 | $167 |
| Continuous Infusion of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve) Through Catheter64448 | 26 | $70 |
| Anesthesia for Total Hip Replacement01214 | 17 | $203 |
| Injection of Anesthetic Agent And/Or Steroid Into Arm Nerve Bundle (brachial Plexus)64415 | 17 | $68 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 15 | $100 |
| Ultrasonic Guidance for Needle Placement76942 | 14 | $29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15 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
Additional practice locations (1)
- 1 Hospital DrColumbia, MO 65201-5276Phone: (573) 882-9522
Registry dates
- Enumerated
- 2019-06-25
- Last updated
- 2023-12-20
- Certified
- 2023-12-20
Frequently asked questions
- What is Nathan Applegren's NPI number?
- Nathan Applegren's National Provider Identifier (NPI) is 1023679651, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Applegren's specialty?
- Nathan Applegren is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Applegren located?
- Nathan Applegren's practice location on file with NPPES is 8000 E Maplewood Ave Ste 120, Greenwood Village, CO 80111-4766.
- What is Nathan Applegren's phone number?
- The practice phone number listed in the NPPES registry for Nathan Applegren is (303) 438-3999.
- Does Nathan Applegren accept Medicare?
- Nathan Applegren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Applegren's NPI active?
- Yes — Nathan Applegren's NPI (1023679651) is active in the NPPES registry as of the last update on 2023-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.