GREGORY MARK ENNS M.D.
NPI 1508961897
Medical Genetics - Medical Biochemical Genetics in Palo Alto, CA
About Gregory Mark Enns M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY MARK ENNS M.D. (NPI 1508961897) is an individual medical biochemical genetics provider in Palo Alto, California, licensed in California (A52095) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Palo Alto, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Gregory Mark Enns M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Gregory Enns reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Honolulu, HI 96826
- Reassigned Medicare billing, Hawaii enrollment
- 262 clinicians in this Medicare group
Honolulu, HI 96826
- Reassigned Medicare billing, Hawaii enrollment
- 370 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gregory Enns's NPI number?
The NPI number for Gregory Enns is 1508961897. It was assigned to this individual provider in the NPPES registry on September 13, 2006.
Where is Gregory Enns located?
Gregory Enns practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.
What is Gregory Enns's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Medical Biochemical Genetics, with taxonomy code 207SG0207X.
Is Gregory Enns enrolled in Medicare?
Yes. Gregory Enns is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Gregory Enns's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Enns reassigns Medicare benefits to 3 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA), Kapiolani Medical Center For Women & Children (Honolulu, HI) and Kapiolani Medical Specialists (Honolulu, HI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Enns's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Enns accept?
Health plans from HMSA list Gregory Enns as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gregory Enns was last updated on April 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Gregory Mark Enns, M.D. · NPI 1508961897
Medical Biochemical Genetics physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since September 13, 2006.
## Identity
- **NPI:** 1508961897 (Entity type: Individual)
- **Enumerated:** September 13, 2006
- **Primary specialty:** Medical Genetics - Medical Biochemical Genetics · taxonomy 207SG0207X
- **State license:** A52095 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 725 WELCH RD, Palo Alto, CA 94304-1601
- **Phone:** (650) 497-8000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Kapiolani Medical Center For Women & Children (NPI 1548215692, Honolulu, HI); Kapiolani Medical Specialists (NPI 1124071014, Honolulu, HI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** April 9, 2024
- **Other identifiers:** Other A52095 (CA); Other MD-12592 (HI)
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Source: [NPI Profile](https://npiprofile.com/npi/1508961897) · Data from the CMS NPPES public registry.