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DR. CLARENCE L WALTROUS JR. M.D.
NPI 1942214580
Internal Medicine - Nephrology in Brooklyn, NY

Active since July 28, 2006PECOS EnrolledAccepts Medicare Assignment
63 PENNSYLVANIA AVE, BROOKLYN, NY 11207(646) 317-0720 Get Directions Write a Review

NPPES record last updated: July 15, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Clarence L Waltrous Jr. M.d. NPPES

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

DR. CLARENCE L WALTROUS JR. M.D. (NPI 1942214580) is an individual nephrology provider in Brooklyn, New York, licensed in New York (134427) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Howard University College Of Medicine (1976).

NPPES Registry Identity

NPI1942214580
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. CLARENCE L WALTROUS JR.Credential: M.D.
Location Address63 PENNSYLVANIA AVEBrooklyn, NY 11207-2405
Mailing Address867 Duncan DrWestbury, NY 11590-1404 · (646) 317-0720
Phone(646) 317-0720
Sole ProprietorYes
Medical School CMSHoward University College Of MedicineGraduated 1976
Enumeration DateJuly 28, 2006
Last NPPES UpdateJuly 15, 2015
✔ NPI 1942214580 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in NY · 134427
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
63 PENNSYLVANIA AVE, Brooklyn, NY 11207
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Other Identifiers 4

Other2488517NY · Us Healthcare, Aetna
Medicaid01535928NY
OtherP2119500NY · Oxford
Medicare UPINE84085NY

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. Clarence L Waltrous Jr. 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.

PECOS PAC ID9133300759
PECOS Enrollment IDI20110301001091
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 Waltrous reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Linden Medical Group, PLLC
1.4 mi
Nephrology
2372 LINDEN BLVD
Brooklyn, NY 11208
  • Reassigned Medicare billing, New York enrollment
  • 2 clinicians in this Medicare group
NPI 1669218517 (646) 317-0731

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

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.

Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
47 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11207 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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 2

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

NEPHROLOGY FOUNDATION OF BROOKLYN
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
63 PENNSYLVANIA AVE
BROOKLYN, NY 11207
Kings County (718) 345-9000
JESUS C MIRANDA M.D.
Specialist
63 PENNSYLVANIA AVE
BROOKLYN, NY 11207
Kings County (718) 345-9000

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 Waltrous's NPI number?

The NPI number for Clarence Waltrous is 1942214580. It was assigned to this individual provider in the NPPES registry on July 28, 2006.

Where is Clarence Waltrous located?

Clarence Waltrous practices at 63 Pennsylvania Ave, Brooklyn, NY 11207. The listed phone number is (646) 317-0720.

What is Clarence Waltrous's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Clarence Waltrous enrolled in Medicare?

Yes. Clarence Waltrous 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 Clarence Waltrous's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Clarence Waltrous reassigns Medicare benefits to Linden Medical Group, PLLC (Brooklyn, NY). 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 Waltrous'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 Waltrous was last updated on July 15, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.