Are you Mark JAMES LLOYD London, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 5841 S Maryland Ave, Mc 5031, Dept of Surgery, Chicago, IL 60637
About Dr. London
Based in Chicago, IL, Mark JAMES LLOYD London, M.D. is listed in the NPI registry under surgery. According to Medicare claims data, Mark cared for 324 Medicare patients across 346 services. The services billed most often include ultrasound of hemodialysis access, relocation of arm vein with connection to arm artery for hemodialysis, and creation of artery-vein connection using tube graft for hemodialysis. NPI 1295032258 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (773) 702-1000
- Email not available
Practice Locations
5841 S MARYLAND AVE MC 5031, DEPT OF SURGERY
Chicago, IL 60637
Conditions Commonly Evaluated or Treated
Within Surgery (Unspecified) generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Breast conditions
Cancer
- Colon cancer
- Esophageal cancer
- Liver cancer
- Neuroendocrine Tumors
- Pancreatic cancer
- Soft-tissue sarcoma
- Stomach cancer
- Thyroid cancer
Colorectal
Digestive
- Abdominal adhesions
- Acid reflux
- Acute pancreatitis
- Bowel obstruction
- Colon polyps
- Diverticulitis
- Gastroparesis
- Peptic ulcer disease
Digestive & blood
Digestive health
- Crohn's disease
- Fecal incontinence
- Perforated bowel
- Severe chronic constipation
- Swallowing difficulties
- Ulcerative colitis
Endocrine
Infections
Lumps & bumps
Lymphatic
Minor surgery
Skin & scars
Skin & soft tissue
Skin cancer
Vascular
Weight & metabolism
Wound care
Wounds
Procedures & services
Endocrine
Vascular
Wounds
Most searched procedures
Abdominal
Abdominal surgery
Bariatric
Breast surgery
Cancer
Cancer surgery
Colorectal
- Anal fistula surgery
- Anal Sphincter Repair
- Colon resection
- Hemorrhoid removal
- Ostomy reversal
- Ostomy surgery
- Rectal prolapse repair
- Surgery for chronic anal fissure
Consultations
Diagnostic
Digestive
Digestive health
Infections
Minor surgery
Post-op care
Reconstruction
Skin & soft tissue
- Cyst Removal
- Lipoma removal
- Mole removal
- Pilonidal cyst surgery
- Scar revision surgery
- Skin Tag Removal
Skin cancer
Vascular & cancer
Weight loss
Wound care
Procedures Most Often Billed to Medicare
346 services · 324 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Relocation of arm vein with connection to arm artery for hemodialysis | Procedure | 36821 |
54 | More than most peers in Surgery |
| Creation of artery-vein connection using tube graft for hemodialysis | Procedure | 36830 |
44 | More than most peers in Surgery |
| Revision of hemodialysis graft | Procedure | 36832 |
36 | More than most peers in Surgery |
| Insertion of abdominal cavity tube using an endoscope | Procedure | 49324 |
33 | More than most peers in Surgery |
| Removal of abdominal cavity tube | Procedure | 49422 |
20 | More than most peers in Surgery |
| Revision of abdominal cavity tube using an endoscope | Procedure | 49325 |
20 | Too few peers to compare |
| Tying or banding of surgically created artery-vein connection | Procedure | 37607 |
19 | Too few peers to compare |
| Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist | Procedure | 36902 |
12 | Less often than most peers in Surgery |
| Removal and/or dissolving of blood clot in hemodialysis circuit and balloon dilation of dialysis segment with imaging review by radiologist, with balloon tube | Procedure | 36905 |
11 | Too few peers to compare |
| Ultrasound of hemodialysis access | Treatment | 93990 |
63 | More often than most peers in Surgery |
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 general surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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 — 29 related providers in 4 groups
Other general surgeons in Chicago 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Relocation of arm vein with connection to arm artery for hemodialysis 5
Providers in IL who bill this service to Medicare most often.
Common questions
What does Mark JAMES LLOYD London specialize in?
Mark JAMES LLOYD London is a general surgeon in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Surgery”.
NPI registry
Where is Mark JAMES LLOYD London located?
Mark JAMES LLOYD London is listed at 5841 S Maryland Ave Mc 5031, Dept of Surgery, Chicago, IL 60637. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mark JAMES LLOYD London's phone number?
The number on file is (773) 702-1000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark JAMES LLOYD London's NPI number?
Mark JAMES LLOYD London's National Provider Identifier is 1295032258. 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
Where did Mark JAMES LLOYD London train?
Mark JAMES LLOYD London attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark JAMES LLOYD London been practicing?
Mark JAMES LLOYD London has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Mark JAMES LLOYD London do most often?
According to Medicare billing data, Mark JAMES LLOYD London performs procedures including relocation of arm vein with connection to arm artery for hemodialysis, creation of artery-vein connection using tube graft for hemodialysis and revision of hemodialysis graft; provides treatments such as ultrasound of hemodialysis access and complete ultrasound of artery and vein blood flow pre-op assessment on both sides of body for hemodialysis access. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark JAMES LLOYD London confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark JAMES LLOYD London. If this is you, claiming it is free.
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