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MR. CLARENCE E. GRIM M.D.
NPI 1760404768
Internal Medicine - Geriatric Medicine in Las Vegas, NV

Active since July 25, 2006PECOS Enrolled
1180 N TOWN CENTER DR STE 100, LAS VEGAS, NV 89144(414) 916-0841 Get Directions Write a Review

NPPES record last updated: March 10, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 10, 2020, Oct 18, 2019, Jun 16, 2018 and 2 more (5 updates tracked since 2018).

About Mr. Clarence E. Grim M.d. NPPES

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

MR. CLARENCE E. GRIM M.D. (NPI 1760404768) is an individual geriatric medicine provider in Las Vegas, Nevada, licensed in Nevada (14040) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1760404768
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameMR. CLARENCE E. GRIMCredential: M.D.
Location Address1180 N TOWN CENTER DR STE 100Las Vegas, NV 89144-6308
Mailing Address195 Hwy 50, Suite #104, Pmb 7172-289Stateline, NV 89449-7172 · (414) 916-0841
Phone(414) 916-0841
Sole ProprietorYes
Enumeration DateJuly 25, 2006
Last NPPES UpdateMarch 10, 20205 updates tracked since enumeration
NPPES CertifiedMarch 10, 2020
✔ NPI 1760404768 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in NV · 14040
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal MedicineTaxonomy 207R00000X · License 36279 (WI)
Also ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X · License 36279 (WI)
1180 N TOWN CENTER DR STE 100, Las Vegas, NV 89144
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Secondary Practice Locations 2

Location 19200 W Wisconsin AveMilwaukee, WI 53226-3522 · Phone (414) 805-3666
Location 2420 Kingsbury GradeStateline, NV 89449-7172 · Phone (414) 916-0841

Other Identifiers 1

Medicaid32093400WI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Clarence E. Grim M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

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

Lakeshore Medical Clinic, LLC
1,529 mi
Family Medicine
2000 E LAYTON AVE STE 100
Saint Francis, WI 53235
  • Reassigned Medicare billing, Wisconsin enrollment
  • 960 clinicians in this Medicare group
NPI 1003861188 (414) 744-6589

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 89144 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$173.24 typical visit price
range $57.07 – $173.24
Typical copayment $43.31 (range $14.26 – $43.31)
Most-billed visit code 99205
Established Patient
$100.60 typical visit price
range $18.27 – $140.96
Typical copayment $25.15 (range $4.56 – $35.24)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MEGAN A BOSWORTH MS, RD, LD
Dietitian, Registered
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 945-2738
DR. MATTHEW PELLNITZ MD
Internal Medicine
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 202-2060
RANKIN FAMILY HOLDINGS INC.
In Home Supportive Care
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (330) 831-1548
MRS. MARGAURITA BETH MONROE FNP-BC
Nurse Practitioner (Family)
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 202-2060
VALENCIA E HURTADO
Technician (Personal Care Attendant)
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 466-5341
VISITING MEDICAL CLINIC LLC
Nurse Practitioner (Family)
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 749-9979
RELIANT PHYSICIANS (KUMAR) PLLC
Hospitalist
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 202-2060
EMILIANA ROMERO
Homemaker
1180 N TOWN CENTER DR STE 100
LAS VEGAS, NV 89144
Clark County (702) 575-3182

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 Clarence Grim's NPI number?

The NPI number for Clarence Grim is 1760404768. It was assigned to this individual provider in the NPPES registry on July 25, 2006.

Where is Clarence Grim located?

Clarence Grim practices at 1180 N Town Center Dr Ste 100, Las Vegas, NV 89144. The listed phone number is (414) 916-0841.

What is Clarence Grim's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Clarence Grim enrolled in Medicare?

Yes. Clarence Grim is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Clarence Grim's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Clarence Grim reassigns Medicare benefits to Lakeshore Medical Clinic, LLC (Saint Francis, WI). 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 Clarence Grim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Clarence Grim was last updated on March 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.