Mark Stephen, M.D.
NPI 1356555916 · Internal Medicine Physician · Sterling Heights, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Stephen, M.D. is a Internal Medicine Physician provider in Sterling Heights, MI (NPI 1356555916).
Provider details
- NPI number
- 1356555916
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301088367 (MI)
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
19 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
1,406 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 | 430 | $128 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 238 | $9 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 203 | $76 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 120 | $78 |
| Residence Visit for Established Patient With Straightforward Medical Decision Making, Per Day, If Using Time, at Least 15 Minutes99347 | 64 | $45 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 166 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 601 | 137 |
| Lisinopril | 326 | 68 |
| Furosemide | 316 | 70 |
| Amlodipine Besylate | 312 | 69 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 296 | 49 |
| Levothyroxine Sodium | 270 | 67 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$840 across 33 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
- 2007-05-10
- Last updated
- 2025-07-08
- Certified
- 2025-07-08
Frequently asked questions
- What is Mark Stephen's NPI number?
- Mark Stephen's National Provider Identifier (NPI) is 1356555916, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Stephen's specialty?
- Mark Stephen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Stephen located?
- Mark Stephen's practice location on file with NPPES is 8244 Metro Parkway, Sterling Heights, MI 48312.
- What is Mark Stephen's phone number?
- The practice phone number listed in the NPPES registry for Mark Stephen is (586) 795-4060.
- Does Mark Stephen accept Medicare?
- Mark Stephen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Stephen's NPI active?
- Yes — Mark Stephen's NPI (1356555916) is active in the NPPES registry as of the last update on 2025-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.