Steven Diener, M.D.
NPI 1558362111 · Internal Medicine Physician · Columbia, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Diener, M.D. is a Internal Medicine Physician provider in Columbia, MD (NPI 1558362111).
Provider details
- NPI number
- 1558362111
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D34868 (MD)
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
20 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
9,295 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,409 | $103 |
| 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 | 1,298 | $17 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 794 | $13 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 626 | $10 |
| Uric Acid Level, Blood84550 | 549 | $4 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 406 | 135 |
| Rosuvastatin Calcium | 308 | 104 |
| Lisinopril | 243 | 74 |
| Amlodipine Besylate | 238 | 73 |
| Levothyroxine Sodium | 216 | 61 |
| Metoprolol Succinate | 204 | 71 |
| Valsartan |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$94 across 5 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
- 2005-08-04
- Last updated
- 2023-03-16
- Certified
- 2023-03-16
Frequently asked questions
- What is Steven Diener's NPI number?
- Steven Diener's National Provider Identifier (NPI) is 1558362111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Diener's specialty?
- Steven Diener is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Diener located?
- Steven Diener's practice location on file with NPPES is 5900 Waterloo Rd Ste 200, Columbia, MD 21045-2641.
- What is Steven Diener's phone number?
- The practice phone number listed in the NPPES registry for Steven Diener is (410) 740-2900.
- Does Steven Diener accept Medicare?
- Steven Diener is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Diener's NPI active?
- Yes — Steven Diener's NPI (1558362111) is active in the NPPES registry as of the last update on 2023-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.