Karlyn Messer, MD
NPI 1659878775 · Diagnostic Radiology Physician · St Louis Park, MN
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karlyn Messer, MD is a Diagnostic Radiology Physician provider in St Louis Park, MN (NPI 1659878775).
Provider details
- NPI number
- 1659878775
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 66853 (MN)
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
8 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
454 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) |
|---|---|---|
| Screening Mammography77067 | 62 | $127 |
| X-Ray of Chest, 2 Views71046 | 51 | $33 |
| X-Ray for Bone Length Assessment77073 | 50 | $45 |
| X-Ray of Chest, 1 View71045 | 49 | $8 |
| X-Ray of Entire Middle and Lower Spine, 2-3 Views72082 | 46 | $70 |
| Screening 3d Breast Mammography77063 | 46 | $51 |
| X-Ray of Lower and Sacral Spine, 2-3 Views |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 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 (2)
- 8100 Northland DrBloomington, MN 55431-4800Phone: (952) 831-8742
- 909 Fulton St SeMinneapolis, MN 55455-4800Phone: (612) 672-7422
Registry dates
- Enumerated
- 2018-04-06
- Last updated
- 2024-07-23
- Certified
- 2024-07-23
Frequently asked questions
- What is Karlyn Messer's NPI number?
- Karlyn Messer's National Provider Identifier (NPI) is 1659878775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karlyn Messer's specialty?
- Karlyn Messer is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Karlyn Messer located?
- Karlyn Messer's practice location on file with NPPES is 6500 Excelsior Blvd, St Louis Park, MN 55426-4702.
- What is Karlyn Messer's phone number?
- The practice phone number listed in the NPPES registry for Karlyn Messer is (952) 993-3123.
- Does Karlyn Messer accept Medicare?
- Karlyn Messer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karlyn Messer's NPI active?
- Yes — Karlyn Messer's NPI (1659878775) is active in the NPPES registry as of the last update on 2024-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.