Matthew Snowdon, D.O.
NPI 1821450420 · Internal Medicine Physician · Highland Park, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Snowdon, D.O. is a Internal Medicine Physician provider in Highland Park, IL (NPI 1821450420).
Provider details
- NPI number
- 1821450420
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 036150001 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
826 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 175 | $70 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 173 | $137 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 114 | $101 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 114 | $17 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 54 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 363 | 111 |
| Amlodipine Besylate | 220 | 66 |
| Levothyroxine Sodium | 202 | 58 |
| Rosuvastatin Calcium | 159 | 49 |
| Lisinopril | 150 | 45 |
| Losartan Potassium | 121 | 35 |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-22
- Last updated
- 2019-09-26
Frequently asked questions
- What is Matthew Snowdon's NPI number?
- Matthew Snowdon's National Provider Identifier (NPI) is 1821450420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Snowdon's specialty?
- Matthew Snowdon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Snowdon located?
- Matthew Snowdon's practice location on file with NPPES is 1777 Green Bay Rd, Highland Park, IL 60035.
- What is Matthew Snowdon's phone number?
- The practice phone number listed in the NPPES registry for Matthew Snowdon is (847) 433-3460.
- Does Matthew Snowdon accept Medicare?
- Matthew Snowdon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Snowdon's NPI active?
- Yes — Matthew Snowdon's NPI (1821450420) is active in the NPPES registry as of the last update on 2019-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.