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DR. MARK CASE M.D.
NPI 1730137019
Family Medicine in Middletown, DE

Active since May 05, 2006Opted out of Medicare · through Oct 1, 2026
124 SLEEPY HOLLOW DR STE 200, MIDDLETOWN, DE 19709(302) 449-1710(302) 449-1717 Get Directions Write a Review

NPPES record last updated: March 10, 2020. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Mark Case M.d. NPPES

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

DR. MARK CASE M.D. (NPI 1730137019) is an individual family medicine provider in Middletown, Delaware, licensed in Delaware (C1-0004730) and active in the NPI registry since May 2006. He has opted out of Medicare through October 1, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1730137019
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. MARK CASECredential: M.D.
Location Address124 SLEEPY HOLLOW DR STE 200Middletown, DE 19709-5838
Mailing Address124 Sleepy Hollow Dr Ste 200Middletown, DE 19709-5838 · (302) 449-1710 · Fax (302) 449-1717
Phone(302) 449-1710
Fax(302) 449-1717
Sole ProprietorYes
Enumeration DateMay 5, 2006
Last NPPES UpdateMarch 10, 2020
NPPES CertifiedMarch 10, 2020
✔ NPI 1730137019 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in DE · C1-0004730
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
124 SLEEPY HOLLOW DR STE 200, Middletown, DE 19709
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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. Mark Case 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 October 1, 2018 through October 1, 2026.

Opt-Out Effective DateOctober 1, 2018
Opt-Out In Effect ThroughOctober 1, 2026Opt-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 19709 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
$88.37 typical visit price
range $57.12 – $173.08
Typical copayment $22.09 (range $14.28 – $43.27)
Most-billed visit code 99203
Established Patient
$100.68 typical visit price
range $18.36 – $141.05
Typical copayment $25.17 (range $4.59 – $35.26)
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 10

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
8 suppliers20 claims69 services$6.21 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
6 suppliers16 claims87 services$11.64 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
7 suppliers21 claims21 services$39.09 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
6 suppliers12 claims12 services$12.06 avg. paid by Medicare
Tubing used with positive airway pressure device A7037
DME-Other DME · category DE001N
6 suppliers12 claims12 services$10.14 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
5 suppliers15 claims90 services$1.69 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Mark Case's NPI number?

The NPI number for Mark Case is 1730137019. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Mark Case located?

Mark Case practices at 124 Sleepy Hollow Dr Ste 200, Middletown, DE 19709. The listed phone number is (302) 449-1710.

What is Mark Case's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mark Case enrolled in Medicare?

No. Mark Case has opted out of Medicare through October 1, 2026. 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 Mark Case 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.