Greene Royster, M.D.
NPI 1518189885 · Reproductive Endocrinology Physician · Newport Beach, CA
Greene Royster, M.D. is a Reproductive Endocrinology Physician provider in Newport Beach, CA (NPI 1518189885).
Provider details
- NPI number
- 1518189885
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C166960 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (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
- 2007-05-03
- Last updated
- 2022-10-05
- Certified
- 2022-10-05
Frequently asked questions
- What is Greene Royster's NPI number?
- Greene Royster's National Provider Identifier (NPI) is 1518189885, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greene Royster's specialty?
- Greene Royster is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Greene Royster located?
- Greene Royster's practice location on file with NPPES is 361 Hospital Rd Ste 333, Newport Beach, CA 92663-3524.
- What is Greene Royster's phone number?
- The practice phone number listed in the NPPES registry for Greene Royster is (949) 642-8727.
- Is Greene Royster's NPI active?
- Yes — Greene Royster's NPI (1518189885) is active in the NPPES registry as of the last update on 2022-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.