Gregory Merten, M.D.
NPI 1154308435 · Nephrology Physician · Charlotte, NC
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Merten, M.D. is a Nephrology Physician provider in Charlotte, NC (NPI 1154308435).
Provider details
- NPI number
- 1154308435
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2002-00256 (NC)
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
3,548 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 373 | $9 |
| Kidney Function Blood Test Panel80069 | 330 | $8 |
| Total Protein Level, Urine84156 | 316 | $4 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury82570 | 313 | $5 |
| Parathormone (parathyroid Hormone) Level83970 | 280 | $40 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 266 | $97 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 106 | 38 |
| Furosemide | 68 | 26 |
| Amlodipine Besylate | 51 | 20 |
| Losartan Potassium | 46 | 19 |
| Doxazosin Mesylate | 44 | 18 |
| Lisinopril | 41 | 15 |
| Carvedilol | 32 | 13 |
| Sevelamer Carbonate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$140 across 3 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
- 2005-12-28
- Last updated
- 2025-04-02
- Certified
- 2025-04-02
Frequently asked questions
- What is Gregory Merten's NPI number?
- Gregory Merten's National Provider Identifier (NPI) is 1154308435, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Merten's specialty?
- Gregory Merten is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Merten located?
- Gregory Merten's practice location on file with NPPES is 10710 Sikes Pl Ste 100, Charlotte, NC 28277-8194.
- What is Gregory Merten's phone number?
- The practice phone number listed in the NPPES registry for Gregory Merten is (704) 248-5101.
- Does Gregory Merten accept Medicare?
- Gregory Merten is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Merten's NPI active?
- Yes — Gregory Merten's NPI (1154308435) is active in the NPPES registry as of the last update on 2025-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.