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DR. LOUIS HAROLD DIAMOND MD
NPI 1962775502
Internal Medicine in Rockville, MD

Active since February 13, 2012PECOS Enrolled
5809 NICHOLSON LN, ROCKVILLE, MD 20852(301) 468-1166 Get Directions Write a Review

NPPES record last updated: February 13, 2012. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Louis Harold Diamond Md NPPES

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

DR. LOUIS HAROLD DIAMOND MD (NPI 1962775502) is an individual internal medicine provider in Rockville, Maryland, licensed in Maryland (D0014930) and active in the NPI registry since February 2012. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962775502
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. LOUIS HAROLD DIAMONDCredential: MD
Location Address5809 NICHOLSON LNRockville, MD 20852-5701
Mailing Address5809 Nicholson LnRockville, MD 20852-5701 · (301) 468-1166
Phone(301) 468-1166
Sole ProprietorYes
Enumeration DateFebruary 13, 2012
✔ NPI 1962775502 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MD · D0014930
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5809 NICHOLSON LN, Rockville, MD 20852
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Louis Harold Diamond Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20852 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
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 3

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

DR. KIMBERLY ANN BAER DDS
Dentist (General Practice)
5809 NICHOLSON LN, STE T 123
N BETHESDA, MD 20852
Montgomery County (301) 770-2270
MRS. NATALIE BRITT ZAVAREEI DDS
Dentist (General Practice)
5809 NICHOLSON LN, STE T 123
NORTH BETHESDA, MD 20852
Montgomery County (301) 770-2270
COMPREHENSIVE INTEGRATIVE DENTISTRY
Preferred Provider Organization
5809 NICHOLSON LN, SUITE T123
N BETHESDA, MD 20852
Montgomery County (301) 770-2270

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 Louis Diamond's NPI number?

The NPI number for Louis Diamond is 1962775502. It was assigned to this individual provider in the NPPES registry on February 13, 2012.

Where is Louis Diamond located?

Louis Diamond practices at 5809 Nicholson Ln, Rockville, MD 20852. The listed phone number is (301) 468-1166.

What is Louis Diamond's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Louis Diamond enrolled in Medicare?

Yes. Louis Diamond is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Louis Diamond was last updated on February 13, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.