DR. BRIAN NATHAN TREMAINE (M.D.) – Endocrinology, Diabetes & Metabolism Physician, NPI 1205897147

DR. BRIAN NATHAN TREMAINE (M.D.) is a healthcare provider. based in Baltimore, Maryland. specializing in INTERNAL MEDICINE, GERIATRIC MEDICINE. They hold the professional credentials M.D.. They hold a License No. K7925 (TX). The NPI Number for DR. BRIAN NATHAN TREMAINE (M.D.) is 1205897147

Main info

Male
30 Years Of Experience
Accepts Medicare Assignment
Name
DR. BRIAN NATHAN TREMAINE (M.D.)
NPI
1205897147
Phone
(281) 249-7100
Address
5525 RESEARCH PARK DR
Enumeration Date
30 March 2006
Last Update Date
26 February 2026

Doctor Profile

Medical School Name
UNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Secondary Phone
2182497100
Graduation Year
1996 (30 years ago)
PAC ID
3779599824
Group Practice PAC ID
1951316017
Professional Enrollment ID
I20060227000303
Address ID
TX770775394HO14703DRXX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience69
Completeness85
Years active:20State licenses:1Digital endpointsOther names

13,297 INTERNAL MEDICINE in TX

Provider Addresses for DR. BRIAN NATHAN TREMAINE (M.D.)

  • 5525, Research Park Drive, Catonsville, Baltimore County, Maryland, 21228, United States

    4TH FLOOR

    BALTIMORE, MD 212284873

    Phone: (281) 249-7100

    Fax: (281) 249-7365

    Type: Mailing

  • 14703 EAGLE VISTA DR

    HOUSTON, TX 770775394

    Phone: (281) 249-7100

    Fax: (281) 249-7365

    Type: Location

  • 5730 EXECUTIVE DR STE 230

    CATONSVILLE, MD 212281762

    Phone: (281) 249-7100

    Fax: (281) 249-7365

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $35.

Total Amount is formed as General ($35) + Research ($0) + Ownership ($0) = $35.

Last reported payment date: 2024-03-21 • Largest payer in this snapshot: ACADIA Pharmaceuticals Inc ($20).

Total Amount

$35

General + Research + Ownership

Payments

2

Total payment records

General Amount

$35

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-03-21

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2006-02-27

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20060227000303IInternal MedicineTXTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99214Established patient office or other outpatient visit, 30-39 minutes480169$0
36415Insertion of needle into vein for collection of blood sample408163$0
99213Established patient office or other outpatient visit, 20-29 minutes372167$0
91320Sarscv2 vac 30mcg trs-suc im142142$0
90480Admn sarscov2 vacc 1 dose142142$0
View full utilization report →

Insurance plans in this area (ZIP 21228)

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Provider's Procedures

DR. BRIAN NATHAN TREMAINE (M.D.) performs procedures in INTERNAL MEDICINE. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
INTERNAL MEDICINETX85610Blood test, clotting time9316
INTERNAL MEDICINETX90670Pneumococcal vaccine for injection into muscle2525

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 1951316017View full group profile
NameSpecialtyState
Geriatric Medicine, Internal MedicineMD
-MD
Internal MedicineTX
Internal MedicineMD
Family PracticeMD
Nurse PractitionerTX
Nurse PractitionerMD
Clinical Social WorkerMD
-MD
Clinical Social WorkerTX

Reviews

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Frequently asked questions

Is there an official ID for DR. BRIAN NATHAN TREMAINE (M.D.) in U.S. healthcare records?
The official identifier for DR. BRIAN NATHAN TREMAINE (M.D.) is NPI 1205897147.
Would DR. BRIAN NATHAN TREMAINE (M.D.) appear as active to a payer?
You can treat DR. BRIAN NATHAN TREMAINE (M.D.) as active for directory purposes; confirm clinical privileges separately.
What clinical focus is listed for DR. BRIAN NATHAN TREMAINE (M.D.)?
At a glance, DR. BRIAN NATHAN TREMAINE (M.D.) is tied to Endocrinology, Diabetes & Metabolism Physician. Clinical services aligned with this taxonomy classification.
What locale is associated with DR. BRIAN NATHAN TREMAINE (M.D.)?
Directory geography for DR. BRIAN NATHAN TREMAINE (M.D.) centers on Baltimore, Maryland.
When was this NPI issued?
Enumeration for DR. BRIAN NATHAN TREMAINE (M.D.) is noted as March 30, 2006 where the registry provides it.

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