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DR. JOHN JEROME MERENDINO JR. M.D.
NPI 1316042831
Internal Medicine - Endocrinology, Diabetes & Metabolism in Bethesda, MD

Active since September 13, 2006Opted out of Medicare · through Jan 3, 2028
10215 FERNWOOD RD, SUITE 405, BETHESDA, MD 20817(301) 230-0300(301) 230-0314 Get Directions Write a Review

NPPES record last updated: March 30, 2016. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. John Jerome Merendino Jr. M.d. NPPES

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

DR. JOHN JEROME MERENDINO JR. M.D. (NPI 1316042831) is an individual endocrinology, diabetes & metabolism provider in Bethesda, Maryland, licensed in Maryland (D36046) and active in the NPI registry since September 2006. He has opted out of Medicare through January 3, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1316042831
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. JOHN JEROME MERENDINO JR.Credential: M.D.
Location Address10215 FERNWOOD RD, SUITE 405Bethesda, MD 20817-1106
Mailing Address10215 Fernwood Rd, Suite 405Bethesda, MD 20817-1106 · (301) 230-0300 · Fax (301) 230-0314
Phone(301) 230-0300
Fax(301) 230-0314
Sole ProprietorYes
Enumeration DateSeptember 13, 2006
Last NPPES UpdateMarch 30, 2016
✔ NPI 1316042831 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Licenses✔ Licensed in MD · D36046✔ Licensed in FL · ME71106✔ Licensed in ME · D0036046
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
10215 FERNWOOD RD, Bethesda, MD 20817
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Other Identifiers 3

Medicaid218651900MD
Medicare ID-Type Unspecified703431MD
Medicare UPINF10495MD

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. John Jerome Merendino Jr. M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 3, 2022 through January 3, 2028.

Opt-Out Effective DateJanuary 3, 2022
Opt-Out In Effect ThroughJanuary 3, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20817 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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
63 suppliers186 claims584 services$5.68 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
28 suppliers68 claims106 services$1.10 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
11 suppliers179 claims179 services$181.77 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

JACQUELINE PATRICIA APGAR MD
Obstetrics & Gynecology
10215 FERNWOOD RD, 101
BETHESDA, MD 20817
Montgomery County (301) 530-2235
MRS. MARY SADAYA-GUILLERMO P.T.
Physical Therapist
10215 FERNWOOD RD, #506
BETHESDA, MD 20817
Montgomery County (301) 530-1010
RICHARD S MARGOLIS MD
Obstetrics & Gynecology
10215 FERNWOOD RD, SUITE 101
BETHESDA, MD 20817
Montgomery County (301) 530-2235
DR. SRIDHAR DURBHAKULA M.D.
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
10215 FERNWOOD RD, SUITE 506
BETHESDA, MD 20817
Montgomery County (301) 530-1010
IVELISSE CUEVAS DDS
Dentist
10215 FERNWOOD RD, #415
BETHESDA, MD 20817
Montgomery County (301) 493-4204
DR. MAHIDHAR DURBHAKULA M.D.
Orthopaedic Surgery (Hand Surgery)
10215 FERNWOOD RD, SUITE 506
BETHESDA, MD 20817
Montgomery County (301) 530-1010
DR. GEORGE BOLEN M.D.
Internal Medicine (Gastroenterology)
10215 FERNWOOD RD, SUITE 404
BETHESDA, MD 20817
Montgomery County (301) 493-5210
EVA RAND RD
Dietitian, Registered
10215 FERNWOOD RD, SUITE 100
BETHESDA, MD 20817
Montgomery County (301) 547-0569

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 John Merendino's NPI number?

The NPI number for John Merendino is 1316042831. It was assigned to this individual provider in the NPPES registry on September 13, 2006.

Where is John Merendino located?

John Merendino practices at 10215 Fernwood Rd Suite 405, Bethesda, MD 20817. The listed phone number is (301) 230-0300.

What is John Merendino's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is John Merendino enrolled in Medicare?

No. John Merendino has opted out of Medicare through January 3, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for John Merendino was last updated on March 30, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.