Mary Margaret Lim, M.D.
NPI 1477816734 · Anesthesiology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Margaret Lim, M.D. is a Anesthesiology Physician provider in Seattle, WA (NPI 1477816734).
Provider details
- NPI number
- 1477816734
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD61107971 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
235 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) |
|---|---|---|
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 59 | $45 |
| Ultrasound of Heart With Probe in Esophagus, With Report93312 | 35 | $109 |
| Ultrasound of Heart Blood Flow, Valves and Chambers93320 | 35 | $18 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 27 | $3 |
| Anesthesia for X-Ray on Artery of Brain, Heart, Or Chest01926 | 25 | $157 |
| Anesthesia for Other Procedure on Upper Abdomen00790 | 20 | $273 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 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
Additional practice locations (1)
- 200 Lothrop StPittsburgh, PA 15213-2536Phone: (412) 958-7034
Registry dates
- Enumerated
- 2012-06-21
- Last updated
- 2021-01-14
- Certified
- 2021-01-14
Frequently asked questions
- What is Mary Margaret Lim's NPI number?
- Mary Margaret Lim's National Provider Identifier (NPI) is 1477816734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Margaret Lim's specialty?
- Mary Margaret Lim is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Margaret Lim located?
- Mary Margaret Lim's practice location on file with NPPES is 1100 9th Ave, Seattle, WA 98101-2756.
- What is Mary Margaret Lim's phone number?
- The practice phone number listed in the NPPES registry for Mary Margaret Lim is (206) 223-6980.
- Does Mary Margaret Lim accept Medicare?
- Mary Margaret Lim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Margaret Lim's NPI active?
- Yes — Mary Margaret Lim's NPI (1477816734) is active in the NPPES registry as of the last update on 2021-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.