Tracy Liu, DO
NPI 1629631767 · Addiction Medicine (Family Medicine) Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tracy Liu, DO is a Addiction Medicine (Family Medicine) Physician provider in Baltimore, MD (NPI 1629631767).
Provider details
- NPI number
- 1629631767
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Family Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- H0097015 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
119 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 60 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $91 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 11 | $174 |
Typical Medicare-allowed amounts for these services range $91–$174 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 27 |
| Atorvastatin Calcium | 27 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 20 |
| Amitriptyline Hcl | 15 |
| Chlorthalidone | 14 |
| Nifedipinebrand: Nifedipine Er | 13 |
| Olmesartan Medoxomil | 13 |
| Buprenorphine Hcl/Naloxone Hclbrand: Suboxone | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-15
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Tracy Liu's NPI number?
- Tracy Liu's National Provider Identifier (NPI) is 1629631767, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tracy Liu's specialty?
- Tracy Liu is listed in the NPPES registry with a primary specialty of Addiction Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Tracy Liu located?
- Tracy Liu's practice location on file with NPPES is 1001 W Pratt St, Baltimore, MD 21223-2679.
- What is Tracy Liu's phone number?
- The practice phone number listed in the NPPES registry for Tracy Liu is (443) 462-3694.
- Does Tracy Liu accept Medicare?
- Tracy Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tracy Liu's NPI active?
- Yes — Tracy Liu's NPI (1629631767) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.