Physician Profile
Unclaimed ProfileAbout LAD
Thomas Edward Lad, M.D. is a healthcare provider in Chicago, IL specializing in internal medicine. Thomas is also listed as specializing in hematology & oncology and medical oncology. According to Medicare claims data, Thomas cared for 102 Medicare patients across 175 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (312) 864-6000
- Email not available
Practice Locations
1901 W HARRISON ST
Chicago, IL 60612
Procedures Most Often Billed to Medicare
175 services · 102 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
100 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
75 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 8 related providers in 1 group
Other internists in Chicago 8
Same specialty, same city.
Common questions
What does Dr. Lad specialize in?
Dr. Lad is an internist in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Internal Medicine”.
NPI registry
Where is Dr. Lad located?
Dr. Lad is listed at 1901 W HARRISON ST, Chicago, IL 60612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Lad's phone number?
The number on file is (312) 864-6000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Lad's NPI number?
Dr. Lad's National Provider Identifier is 1972511632. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Dr. Lad been practicing?
Dr. Lad has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Dr. Lad do most often?
According to Medicare billing data, Dr. Lad the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Lad confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lad. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.