DR. MARSHA Y BLAKESLEE M.D., D.O.
NPI 1902925639
Internal Medicine in Severna Park, MD

Active since March 27, 2007Opted out of Medicare · through Jan 1, 2028CLIA 21D0960745 · Microscopy
479 JUMPERS HOLE RD, STE 304-A, SEVERNA PARK, MD 21146(410) 544-0053(410) 544-7830 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Marsha Y Blakeslee M.d., D.o. NPPES

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

DR. MARSHA Y BLAKESLEE M.D., D.O. (NPI 1902925639) is an individual internal medicine provider in Severna Park, Maryland, licensed in Maryland (H44184) and active in the NPI registry since March 2007. She has opted out of Medicare through January 1, 2028 and remains eligible to order and refer and holds a CLIA Microscopy certificate valid through May 18, 2027.

NPPES Registry Identity

NPI1902925639
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARSHA Y BLAKESLEECredential: M.D., D.O.
Location Address479 JUMPERS HOLE RD, STE 304-ASeverna Park, MD 21146-1600
Mailing Address479 Jumpers Hole Rd, Ste 304-aSeverna Park, MD 21146-1600 · (410) 544-0053 · Fax (410) 544-7830
Fax(410) 544-7830
Sole ProprietorNo
Enumeration DateMarch 27, 2007
Last NPPES UpdateJuly 9, 2007
NPI 1902925639 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 · H44184
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.
479 JUMPERS HOLE RD, Severna Park, MD 21146

Other Identifiers 8

Medicare ID-Type Unspecified732L581DMD · Marsha Blakeslee
Other000000214001MD · Phcs
Other00001181183 08MD · United Healthcare
Other531364 04MD · Carefirst Rendering Id
OtherH44184MD · State License
Other3195MD · Coventry Healthcare
OtherKJ46BLMD · Carefirst Bcbs
Medicare UPINF75766MD

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. Marsha Y Blakeslee M.d., D.o. 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 1, 2014 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2014
Opt-Out In Effect ThroughJanuary 1, 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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 21D0960745

Marsha Y Blakeslee Do LLC · Severna Park, MD
Active · expires May 18, 2027
CLIA Number21D0960745
Laboratory TypePhysician Office
Certificate Effective DateMay 19, 2025
Certificate Expiration DateMay 18, 2027
Laboratory DirectorMarsha Y. Blakeslee MD
Laboratory Phone(410) 544-0053
Laboratory LocationMarsha Y Blakeslee Do LLC479 Jumpers Hole Road Suite 304A, Severna Park, MD 21146
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21146 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
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 4

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

Patient lift, hydraulic or mechanical, includes any seat, sling, strap(s) or pad(s) E0630
DME-Other DME · category DE000N
1 supplier12 claims12 services$38.89 avg. paid by Medicare
Wheelchair accessory, manual swingaway, retractable or removable mounting hardware for joystick, other control interface or positioning accessory E1028
DME-Wheelchairs · category DD021N
2 suppliers12 claims12 services$8.96 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$56.29 avg. paid by Medicare
Power wheelchair, group 2 standard, captains chair, patient weight capacity up to and including 300 pounds K0823
DME-Wheelchairs · category DD009N
2 suppliers12 claims12 services$127.12 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 13

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

Psychologist
479 JUMPERS HOLE RD, SUITE 304B
SEVERNA PARK, MD 21146
Dentist (General Practice)
479 JUMPERS HOLE RD, SUITE 201
SEVERNA PARK, MD 21146
Psychologist (Clinical)
479 JUMPERS HOLE RD, SUITE 206
SEVERNA PARK, MD 21146
Psychologist
479 JUMPERS HOLE RD, SUITE 304B
SEVERNA PARK, MD 21146
Dentist
479 JUMPERS HOLE RD, SUITE 201
SEVERNA PARK, MD 21146
Otolaryngology
479 JUMPERS HOLE RD, SUITE 304
SEVERNA PARK, MD 21146
Internal Medicine
479 JUMPERS HOLE RD, STE 304A BLAKESLEE & EICHELBERGER LLC
SEVERNA PARK, MD 21146
Otolaryngology (Facial Plastic Surgery)
479 JUMPERS HOLE RD, SUITE 304
SEVERNA PARK, MD 21146

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 Marsha Blakeslee's NPI number?

The NPI number for Marsha Blakeslee is 1902925639. It was assigned to this individual provider in the NPPES registry on March 27, 2007.

Where is Marsha Blakeslee located?

Marsha Blakeslee practices at 479 Jumpers Hole Rd Ste 304-A, Severna Park, MD 21146. The listed phone number is (410) 544-0053.

What is Marsha Blakeslee's specialty?

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

Is Marsha Blakeslee enrolled in Medicare?

No. Marsha Blakeslee has opted out of Medicare through January 1, 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.

Does Marsha Blakeslee hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 21D0960745) is associated with this NPI, valid through May 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Marsha Blakeslee was last updated on July 9, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.