Dr John D Merwin, MD - Medicare Anesthesiology in Saint Louis, MO

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Dr John D Merwin, MD is a medicare enrolled "Anesthesiology" physician in Saint Louis, Missouri. He went to University Of Texas Medical School At San Antonio and graduated in 1985 and has 39 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Ssm Health Slu Hospital Anesthesia Physician Billing Llc and his current practice location is 10925 Brooktrail Ct, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 473-6800.

Dr John D Merwin is licensed to practice in Missouri (license number 100344) 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 1770562209.

Contact Information

Dr John D Merwin, MD
10925 Brooktrail Ct,
Saint Louis, MO 63141-8304
(314) 473-6800
(314) 473-6800

Map and Direction




Physician's Profile

Full NameDr John D Merwin
GenderMale
SpecialityAnesthesiology
Experience39 Years
Location10925 Brooktrail Ct, Saint Louis, Missouri
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:
  • Dr John D Merwin attended and graduated from University Of Texas Medical School At San Antonio in 1985
  NPI Data:
  • NPI Number: 1770562209
  • Provider Enumeration Date: 01/12/2006
  • Last Update Date: 03/05/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 4183713506
  • Enrollment ID: I20100616000028

Medical Identifiers

Medical identifiers for Dr John D Merwin such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770562209NPI-NPPES
203333927MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 100344 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St Louis University HospitalSaint louis, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ssm Health Slu Hospital Anesthesia Physician Billing Llc327484233180

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 John D Merwin allows following entities to bill medicare on his behalf.
Entity NameSpecialists In Anesthesia Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689619280
PECOS PAC ID: 2567369473
Enrollment ID: O20031218000188
Entity NameComprehensive Anesthesia Care Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215975156
PECOS PAC ID: 5799698551
Enrollment ID: O20040602000607
Entity NameSpecialists In Anesthesia Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689619280
PECOS PAC ID: 2567369473
Enrollment ID: O20051103000720
Entity NameDps Anesthesia, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649339607
PECOS PAC ID: 6901900075
Enrollment ID: O20070329000159
Entity NameSsm Health Slu Hospital Anesthesia Physician Billing Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407232804
PECOS PAC ID: 3274842331
Enrollment ID: O20151013000437
Entity NameSsm Health Care Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306589544
PECOS PAC ID: 0143608372
Enrollment ID: O20220531002655

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 John D Merwin 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 John D Merwin, MD
10925 Brooktrail Ct,
Saint Louis, MO 63141-8304

Ph: (314) 473-6800		Dr John D Merwin, MD
10925 Brooktrail Ct,
Saint Louis, MO 63141-8304

Ph: (314) 473-6800

Reviews and Comments


Anesthesiology Doctors in Saint Louis, MO

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Rebecca Chen, MD
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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).

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