Nathan Kramer
NPI 1891103925 · Foot & Ankle Surgery Podiatrist · Chicago, IL
Enrolled with Medicare as Practitioner - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Kramer is a Foot & Ankle Surgery Podiatrist provider in Chicago, IL (NPI 1891103925).
Provider details
- NPI number
- 1891103925
- Entity type
- Individual
- Primary specialty
- Foot & Ankle Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- R93800 (NY)
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Podiatric Medicine & Surgery Service Providers
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
1,848 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 750 | $94 |
| Test Or Measurement for Functional Capacity, Each 15 Minutes97750 | 677 | $29 |
| Removal of Inflamed Or Infected Skin, Up to 10% of Body Surface11000 | 160 | $61 |
| Removal of Tissue From Wound, 20.0 Sq Cm Or Less97597 | 76 | $93 |
| X-Ray of Foot, Minimum of 3 Views73630 | 63 | $35 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 62 | $115 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,764 across 38 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
- 2014-08-01
- Last updated
- 2022-08-15
- Certified
- 2022-08-15
Frequently asked questions
- What is Nathan Kramer's NPI number?
- Nathan Kramer's National Provider Identifier (NPI) is 1891103925, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Kramer's specialty?
- Nathan Kramer is listed in the NPPES registry with a primary specialty of Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is Nathan Kramer located?
- Nathan Kramer's practice location on file with NPPES is 6445 N Central Ave, Chicago, IL 60646-2901.
- What is Nathan Kramer's phone number?
- The practice phone number listed in the NPPES registry for Nathan Kramer is (773) 202-8800.
- Does Nathan Kramer accept Medicare?
- Nathan Kramer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Kramer's NPI active?
- Yes — Nathan Kramer's NPI (1891103925) is active in the NPPES registry as of the last update on 2022-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.