Mandeep Grewal, MD
NPI 1447256862 · Nephrology Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mandeep Grewal, MD is a Nephrology Physician provider in Chattanooga, TN (NPI 1447256862).
Provider details
- NPI number
- 1447256862
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 26508 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 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
7,453 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) |
|---|---|---|
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 628 | $47 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 586 | $60 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 570 | $43 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 563 | $114 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 371 | $38 |
| Urine Microalbumin (protein) Level82043 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Torsemide | 100 | 42 |
| Spironolactone | 78 | 24 |
| Carvedilol | 55 | 17 |
| Hydralazine Hcl | 53 | 18 |
| Allopurinol | 52 | 17 |
| Losartan Potassium | 46 | 15 |
| Dapagliflozin Propanediolbrand: Farxiga | 45 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 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
- 2005-06-21
- Last updated
- 2009-05-14
Frequently asked questions
- What is Mandeep Grewal's NPI number?
- Mandeep Grewal's National Provider Identifier (NPI) is 1447256862, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mandeep Grewal's specialty?
- Mandeep Grewal is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mandeep Grewal located?
- Mandeep Grewal's practice location on file with NPPES is 251 N Lyerly St, Chattanooga, TN 37404-2739.
- What is Mandeep Grewal's phone number?
- The practice phone number listed in the NPPES registry for Mandeep Grewal is (423) 826-8000.
- Does Mandeep Grewal accept Medicare?
- Mandeep Grewal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mandeep Grewal's NPI active?
- Yes — Mandeep Grewal's NPI (1447256862) is active in the NPPES registry as of the last update on 2009-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.