What is Laurence Gruenwald's NPI number?

Laurence Gruenwald's National Provider Identifier (NPI) is 1508868191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Laurence Gruenwald's specialty?

Laurence Gruenwald is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).

Where is Laurence Gruenwald located?

Laurence Gruenwald's practice location on file with NPPES is 90 Millburn Ave, Millburn, NJ 07041-1945.

What is Laurence Gruenwald's phone number?

The practice phone number listed in the NPPES registry for Laurence Gruenwald is (973) 378-7990.

Is Laurence Gruenwald's NPI active?

Yes — Laurence Gruenwald's NPI (1508868191) is active in the NPPES registry as of the last update on 2007-07-12.

IndividualActive

Laurence Gruenwald, MD

NPI 1508868191 · Pediatrics Physician · Millburn, NJ

Laurence Gruenwald, MD is a Pediatrics Physician provider in Millburn, NJ (NPI 1508868191).

Provider details

NPI number: 1508868191
Entity type: Individual
Primary specialty: Pediatrics PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 25MA03453900 (NJ)

Practice location

90 Millburn Ave

Suite 101

Millburn, NJ 07041-1945

Phone: (973) 378-7990

Fax: (973) 378-7991

Street-level locationGet directions

More NJ providers

Mailing address

90 Millburn Ave

Millburn, NJ 07041-1945

Specialties & taxonomies

Pediatrics PhysicianPrimary208000000XLicense 25MA03453900 (NJ)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
21 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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 prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.

Drug	Part D claims (2024)
Citalopram Hydrobromidebrand: Citalopram Hbr	18
Acetaminophen With Codeinebrand: Acetaminophen-Codeine	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2005-08-12
Last updated: 2007-07-12

Frequently asked questions

What is Laurence Gruenwald's NPI number?: Laurence Gruenwald's National Provider Identifier (NPI) is 1508868191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Laurence Gruenwald's specialty?: Laurence Gruenwald is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
Where is Laurence Gruenwald located?: Laurence Gruenwald's practice location on file with NPPES is 90 Millburn Ave, Millburn, NJ 07041-1945.
What is Laurence Gruenwald's phone number?: The practice phone number listed in the NPPES registry for Laurence Gruenwald is (973) 378-7990.
Is Laurence Gruenwald's NPI active?: Yes — Laurence Gruenwald's NPI (1508868191) is active in the NPPES registry as of the last update on 2007-07-12.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions