Ruth Lim, M.D.
NPI 1609919174 · Diagnostic Radiology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Lim, M.D. is a Diagnostic Radiology Physician provider in New Haven, CT (NPI 1609919174).
Provider details
- NPI number
- 1609919174
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 75882 (CT)
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
151 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 94 | $114 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 33 | $114 |
| Nuclear Medicine Study Whole Body With Ct Scan78816 | 24 | $115 |
Typical Medicare-allowed amounts for these services range $114–$115 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-15
- Last updated
- 2024-01-20
- Certified
- 2024-01-20
Frequently asked questions
- What is Ruth Lim's NPI number?
- Ruth Lim's National Provider Identifier (NPI) is 1609919174, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Lim's specialty?
- Ruth Lim is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Lim located?
- Ruth Lim's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Ruth Lim's phone number?
- The practice phone number listed in the NPPES registry for Ruth Lim is (203) 688-2433.
- Does Ruth Lim accept Medicare?
- Ruth Lim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Lim's NPI active?
- Yes — Ruth Lim's NPI (1609919174) is active in the NPPES registry as of the last update on 2024-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.