Dr R Marshall Ackerman, MD - Medicare Specialist in Rockville, MD

Dr R Marshall Ackerman, MD is a medicare enrolled "Specialist" physician in Rockville, Maryland. His current practice location is 9601 Blackwell Rd Ste 100, Rockville, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 340-9200.

Dr R Marshall Ackerman is licensed to practice in Maryland (license number D0002443) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1366417289.

Contact Information

Dr R Marshall Ackerman, MD
9601 Blackwell Rd Ste 100,
Rockville, MD 20850-6477
(301) 340-9200
(301) 340-6934

Map and Direction




Physician's Profile

Full NameDr R Marshall Ackerman
GenderMale
SpecialitySpecialist
Location9601 Blackwell Rd Ste 100, Rockville, Maryland
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1366417289
  • Provider Enumeration Date: 02/22/2006
  • Last Update Date: 03/08/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 1951319342
  • Enrollment ID: I20100311000065

Medical Identifiers

Medical identifiers for Dr R Marshall Ackerman such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366417289NPI-NPPES
200008826OtherMDMEDICARE RAILROAD
0001OtherMDBLUE SHIELD OF NCA
410043OtherMDBLUE SHIELD OF MARYLAND
1080142007OtherMDCIGNA
492968OtherMDNCPPO
225302OtherMDMAMSI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207X00000XOrthopaedic Surgery D0002443 (Maryland)Secondary
174400000XSpecialist D0002443 (Maryland)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr R Marshall Ackerman allows following entities to bill medicare on his behalf.
Entity NameShady Grove Orthopaedic Assoc Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669448437
PECOS PAC ID: 6204885791
Enrollment ID: O20050122000016

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr R Marshall Ackerman is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr R Marshall Ackerman, MD
9601 Blackwell Rd Ste 100,
Rockville, MD 20850-6477

Ph: (301) 340-9200
Dr R Marshall Ackerman, MD
9601 Blackwell Rd Ste 100,
Rockville, MD 20850-6477

Ph: (301) 340-9200

Reviews and Comments



Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.