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DR. NATHAN EDWARD GRINDER D.C.
NPI 1164726717
Chiropractor in Chandler, AZ

Active since December 22, 2010Accepts Medicare Assignment
2815 E OCOTILLO RD STE 4, CHANDLER, AZ 85249(480) 781-2964(480) 809-4988 Get Directions Write a Review

NPPES record last updated: May 10, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 10, 2021, Dec 7, 2017, Apr 19, 2017 (3 updates tracked since 2017).

About Dr. Nathan Edward Grinder D.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NATHAN EDWARD GRINDER D.C. (NPI 1164726717) is an individual chiropractor in Chandler, Arizona, licensed in Arizona (8174) and active in the NPI registry since December 2010. He is a graduate of Life Chiropractic College - West (2010).

NPPES Registry Identity

NPI1164726717
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameDR. NATHAN EDWARD GRINDERCredential: D.C.
Location Address2815 E OCOTILLO RD STE 4Chandler, AZ 85249-6040
Mailing Address4337 E Amber LnGilbert, AZ 85296-1585 · (602) 430-4486 · Fax (480) 809-4988
Phone(480) 781-2964
Fax(480) 809-4988
Sole ProprietorNo
Medical School CMSLife Chiropractic College - WestGraduated 2010
Enumeration DateDecember 22, 2010
Last NPPES UpdateMay 10, 20213 updates tracked since enumeration
NPPES CertifiedMay 10, 2021
✔ NPI 1164726717 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in AZ · 8174
Definition
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
Also ListedChiropractor · RehabilitationTaxonomy 111NR0400X · License 8174 (AZ)
Also ListedChiropractor · Sports PhysicianTaxonomy 111NS0005X · License 8174 (AZ)
2815 E OCOTILLO RD STE 4, Chandler, AZ 85249
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.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

Dr. Nathan Edward Grinder D.c. 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.

PECOS PAC ID5597949008
PECOS Enrollment IDI20110407000495

Medicare Billing Reassignment

Medicare enrollment records show Nathan Grinder reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ocotillo Medical Group LLC
5.6 mi
General Practice
2815 E. OCOTILLO RD, #4
Chandler, AZ 85233
  • Reassigned Medicare billing, Arizona enrollment
  • 4 clinicians in this Medicare group
NPI 1538692470 (480) 926-7800

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Chiropractic manipulative treatment, 3-4 spinal regions 98941
Chiropractic manipulative treatment for 3-4 spinal regions involves a trained professional applying controlled force to specific areas of your spine. This can help alleviate pain, improve physical function, and support your body's natural healing process.
465 services37 patients
Chiropractic manipulative treatment, 5 spinal regions 98942
Chiropractic manipulative treatment focuses on adjusting your spine to improve your body's alignment. In a 5 spinal region treatment, the chiropractor applies controlled force to specific areas in your neck, mid-back, lower back, and both sides of your pelvis.
183 services12 patients

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ARTESIAN MEDICAL GROUP, LLC
General Practice
2815 E OCOTILLO RD STE 4
CHANDLER, AZ 85249
Maricopa County (480) 781-2964
PARKER HILDEBRAND PA-C
Physician Assistant
2815 E OCOTILLO RD STE 4
CHANDLER, AZ 85249
Maricopa County (480) 781-2964
SOUTH CHANDLER MEDICAL GROUP LLC
General Practice
2815 E OCOTILLO RD STE 4
CHANDLER, AZ 85249
Maricopa County (337) 315-7927
COLLIN CRAGUN DC
Chiropractor
2815 E OCOTILLO RD STE 4
CHANDLER, AZ 85249
Maricopa County (480) 781-2964
COOPER MEDICAL GROUP, LLC
General Practice
2815 E OCOTILLO RD STE 4
CHANDLER, AZ 85249
Maricopa County (480) 781-2964
OCOTILLO HEALTH CENTERS, LLC
General Practice
2815 E OCOTILLO RD STE 4
CHANDLER, AZ 85249
Maricopa County (480) 781-2964

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 Nathan Grinder's NPI number?

The NPI number for Nathan Grinder is 1164726717. It was assigned to this individual provider in the NPPES registry on December 22, 2010.

Where is Nathan Grinder located?

Nathan Grinder practices at 2815 E Ocotillo Rd Ste 4, Chandler, AZ 85249. The listed phone number is (480) 781-2964.

What is Nathan Grinder's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is Nathan Grinder enrolled in Medicare?

Yes. Nathan Grinder 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 organization bills Medicare for Nathan Grinder's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathan Grinder reassigns Medicare benefits to Ocotillo Medical Group LLC (Chandler, AZ). The 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 Nathan Grinder's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nathan Grinder accept?

Health plans from UnitedHealthcare list Nathan Grinder 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 Nathan Grinder was last updated on May 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.