Lauren Grinspan, M.D., PH.D.
NPI 1629497136 · Gastroenterology Physician · New York, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lauren Grinspan, M.D., PH.D. is a Gastroenterology Physician provider in New York, NY (NPI 1629497136).
Provider details
- NPI number
- 1629497136
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 268818 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
173 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 79 | $129 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 57 | $198 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 19 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 18 | $143 |
Typical Medicare-allowed amounts for these services range $8–$198 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ursodiol | 118 | 23 |
| Pantoprazole Sodium | 88 | 24 |
| Tacrolimus | 67 | 20 |
| Entecavir | 49 | — |
| Amlodipine Besylate | 43 | 12 |
| Carvedilol | 40 | — |
| Furosemide | 36 | 14 |
| Folic Acid | 34 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-04-11
- Last updated
- 2021-06-18
- Certified
- 2021-06-18
Frequently asked questions
- What is Lauren Grinspan's NPI number?
- Lauren Grinspan's National Provider Identifier (NPI) is 1629497136, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lauren Grinspan's specialty?
- Lauren Grinspan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Lauren Grinspan located?
- Lauren Grinspan's practice location on file with NPPES is 5 E 98th St Fl 12, New York, NY 10029-6501.
- What is Lauren Grinspan's phone number?
- The practice phone number listed in the NPPES registry for Lauren Grinspan is (212) 241-8035.
- Does Lauren Grinspan accept Medicare?
- Lauren Grinspan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lauren Grinspan's NPI active?
- Yes — Lauren Grinspan's NPI (1629497136) is active in the NPPES registry as of the last update on 2021-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.