John Flaks, DO - Medicare Anesthesiology in Baltimore, MD

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John Flaks, DO is a medicare enrolled "Anesthesiology" physician in Baltimore, Maryland. He went to Philadelphia College Of Osteopathic Medicine and graduated in 2000 and has 25 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Columbia Outpatient Sedation Llc, Columbia Outpatient Sedation Llc and his current practice location is 3001 S Hanover St, Baltimore, Maryland. You can reach out to his office (for appointments etc.) via phone at (410) 350-3341.

John Flaks is licensed to practice in Maryland (license number H0059599) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1366424939.

Contact Information

John Flaks, DO
3001 S Hanover St,
Baltimore, MD 21225-1233
(410) 350-3341
Not Available

Map and Direction




Physician's Profile

Full NameJohn Flaks
GenderMale
SpecialityAnesthesiology
Experience25 Years
Location3001 S Hanover St, Baltimore, Maryland
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • John Flaks attended and graduated from Philadelphia College Of Osteopathic Medicine in 2000
  NPI Data:
  • NPI Number: 1366424939
  • Provider Enumeration Date: 11/18/2005
  • Last Update Date: 10/17/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 8628054483
  • Enrollment ID: I20040624000980

Medical Identifiers

Medical identifiers for John Flaks such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366424939NPI-NPPES
404715000MedicaidMD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology H0059599 (Maryland)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Columbia Outpatient Sedation Llc347671879227
Columbia Outpatient Sedation Llc347671879227

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. John Flaks allows following entities to bill medicare on his behalf.
Entity NameAnesthesia Company Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871548156
PECOS PAC ID: 4587559026
Enrollment ID: O20040216000401
Entity NameFrancu One Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194972588
PECOS PAC ID: 1658437058
Enrollment ID: O20090311000028
Entity NameColumbia Outpatient Sedation Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588921225
PECOS PAC ID: 3476718792
Enrollment ID: O20120711000267
Entity NameMedstar Medical Group Ii Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184046187
PECOS PAC ID: 0547413825
Enrollment ID: O20130117000347
Entity NameGlobal Anesthesia Services Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013312412
PECOS PAC ID: 3173610466
Enrollment ID: O20150304000182
Entity NameMedstar Medical Group Anesthesiology Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528578333
PECOS PAC ID: 1052678034
Enrollment ID: O20171207001966

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. John Flaks 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
John Flaks, DO
29 Creamery Ln,
Easton, MD 21601-3137

Ph: (410) 819-0710		John Flaks, DO
3001 S Hanover St,
Baltimore, MD 21225-1233

Ph: (410) 350-3341

Reviews and Comments


Anesthesiology Doctors in Baltimore, MD

Kathryn Rosenblatt, M.D.
Anesthesiology
Medicare: May Accept Medicare Assignments
Practice Location: 1800 Orleans St, Baltimore, MD 21287
Phone: 410-955-7461    Fax: 410-614-7903
Dr. Tiffani Danielle Pittman, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 5601 Loch Raven Blvd, Baltimore, MD 21239
Phone: 443-444-4863    Fax: 443-444-4997
Aaron Sachs, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 22 S Greene St # S11c, University Of Maryland Department Of Anesthesia, Baltimore, MD 21201
Phone: 410-328-1239    
Lynette Mark, M.D.
Anesthesiology
Medicare: May Accept Medicare Assignments
Practice Location: 600 N Wolfe St, Baltimore, MD 21287
Phone: 410-955-6353    
Charles Lin, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 900 Canton Ave, Baltimore, MD 21229
Phone: 410-368-3045    Fax: 410-951-4009
Dr. Jasjit B Atwal, M.D.
Anesthesiology
Medicare: Not Enrolled in Medicare
Practice Location: 110 S Paca St, Suite 300 6th Fl, Baltimore, MD 21201
Phone: 410-328-6720    Fax: 410-328-1674
Dr. Gerard Limerick, MD
Anesthesiology
Medicare: May Accept Medicare Assignments
Practice Location: 600 N Wolfe Street, Nelson 2-131, Baltimore, MD 21287
Phone: 410-955-1818    Fax: 410-502-0541

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.