Louis Spiegel, M.D.
NPI 1821230715 · Nephrology Physician · Southampton, NY
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Spiegel, M.D. is a Nephrology Physician provider in Southampton, NY (NPI 1821230715).
Provider details
- NPI number
- 1821230715
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 258804 (NY)
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
17 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
1,051 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 | 299 | $151 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 269 | $136 |
| 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 | 224 | $19 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 126 | $91 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 79 | $199 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 126 | 33 |
| Calcitriol | 69 | 16 |
| Dapagliflozin Propanediolbrand: Farxiga | 67 | 17 |
| Furosemide | 37 | 18 |
| Patiromer Calcium Sorbitexbrand: Veltassa | 31 | — |
| Hydrochlorothiazide | 26 | — |
| Lisinopril | 26 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$384 across 17 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
- 2009-03-24
- Last updated
- 2022-06-12
- Certified
- 2022-06-12
Frequently asked questions
- What is Louis Spiegel's NPI number?
- Louis Spiegel's National Provider Identifier (NPI) is 1821230715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Spiegel's specialty?
- Louis Spiegel is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Spiegel located?
- Louis Spiegel's practice location on file with NPPES is 325 Meeting House Lane, Southampton, NY 11968.
- What is Louis Spiegel's phone number?
- The practice phone number listed in the NPPES registry for Louis Spiegel is (631) 283-4048.
- Does Louis Spiegel accept Medicare?
- Louis Spiegel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Spiegel's NPI active?
- Yes — Louis Spiegel's NPI (1821230715) is active in the NPPES registry as of the last update on 2022-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.