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Edit this profileAt a glance
- 3 Alumni Dr, Ste 201, Exeter, NH 03833
About Dr. Chismark
Based in Exeter, NH, Anthony D. Chismark, MD is listed in the NPI registry under colon & rectal surgery. Anthony graduated from Geisel School of Medicine at Dartmouth in 2000. Anthony is also listed as specializing in surgery. Medicare claims data shows Anthony provided 185 services to 157 patients. The services billed most often include diagnostic exam of anus using an endoscope, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more. NPI 1679583389 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
- (603) 775-7405
- Email not available
Practice Locations
3 ALUMNI DR STE 201
Exeter, NH 03833
Conditions Commonly Evaluated or Treated
Within Colon and Rectal Surgery 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
Anorectal conditions
- Rectal Ulcer
- Anal fistula
Anorectal disorders
- Anal Itching
- Anal Skin Tags
- Anal Stricture
- Perianal Hematoma
- Rectovaginal Fistula
Bowel disorders
- Bowel Blockage in Babies
- Constipation From Pain Medicine
- Difficulty Emptying Bowels
- Severely Enlarged Colon
- Twisted Bowel
- Chronic diarrhea
Bowel symptoms
- Diverticulosis
- Constipation
- Lower gastrointestinal bleeding
Cancer
- Precancerous Anal Cells
- Anal cancer
- Appendix cancer
- Inherited Cancer Risk
Colon conditions
- Inherited Colon Polyps
Inflammatory bowel disease
- Radiation Proctitis
- Ulcerative colitis
Inflammatory conditions
- Rectal Inflammation
Ostomy & bowel
Ostomy & surgical complications
- Stoma Problems
Pain
- Rectal Pain
- Tailbone pain
Pelvic disorders
- Bowel Endometriosis
Skin conditions
- Perianal Boils
Most searched conditions
- Anal fissures
- Colon cancer
- Crohn's disease
- Diverticulitis
- Hemorrhoids
Digestive emergencies
Infections
- C. diff Infection
Infections & cysts
Pelvic floor & structure
Tumors & growths
Vascular & inflammatory
Procedures & services
Abdominal surgery
- Bowel Adhesion Removal
- Appendectomy
Anorectal procedures
- Anal Dilation
Bowel management
- Transanal Irrigation
Cancer surgery
- Complete Rectum and Anus Removal
- Heated Chemotherapy for Abdominal Cancer
- Low Anterior Resection
Diagnostic tests
- Endorectal Ultrasound
- J-Pouch Scope
- Rectal Exam with Scope
Diagnostics
- Defecography
- High-Resolution Anorectal Manometry
- High-Resolution Anoscopy
- Prostate Ultrasound
Digestive
- Bowel Retraining Program
Endoscopy & minimally invasive
- Colon polyp removal
- Flexible sigmoidoscopy
- Transanal Minimally Invasive Surgery
Excision & drainage
- Anal Skin Tag Removal
- Anal Wart Removal
- Drainage of anal abscess
- Pilonidal cyst surgery
Fistula procedures
- Seton Drain Placement
General surgery
Hemorrhoid treatments
- Hemorrhoid Injections
- Laser Hemorrhoid Treatment
- Rubber-band ligation of hemorrhoids
Infection & Microbiology Tests
Inflammatory bowel surgery
- Bowel-Sparing Surgery for Crohn's
Injections & pain relief
- Anal Sphincter Botox
Minimally invasive surgery
- Robotic Colon Surgery
Ostomy & bowel
- Ostomy bag fitting and care
- Ostomy leak troubleshooting
Ostomy surgery
- Colostomy Placement
- Ileostomy Surgery
- Parastomal Hernia Repair
- Stoma Revision
Pelvic therapy
- Pelvic Biofeedback Therapy
Reconstructive surgery
- J-Pouch Surgery
- Rectovaginal Fistula Repair
- Anal Sphincter Repair
- Ostomy reversal
Wound care
- Stoma Site Marking Before Surgery
Most searched procedures
- Bowel resection
- Colonoscopy
- Fistula repair
- Hemorrhoid removal
Cancer screening
- Cancer Genetic Testing
Digestive health
- Stool Transplant
Pelvic floor & prolapse
- Pelvic organ prolapse surgery
- Rectal prolapse repair
- Sacral neuromodulation
Therapy & rehabilitation
Procedures Most Often Billed to Medicare
185 services · 157 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
47 | More often than most peers in Colon & Rectal Surgery |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
14 | More often than most peers in Colon & Rectal Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
36 | As often as other peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
25 | As often as other peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
22 | Less often than most peers in Colon & Rectal Surgery |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
14 | As often as other peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
14 | Less often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
13 | Less often than most peers in Colon & Rectal 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.
Related specialists at this location 3
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.
Trained at Geisel School of Medicine at Dartmouth 5
Other providers in the same specialty who trained at the same institution.
More connections — 12 related providers in 2 groups
Class of 2000 at Geisel School of Medicine at Dartmouth 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of anus using an endoscope 4
Providers in NH who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Chismark?
Dr. Chismark is a colorectal surgeon in Exeter, NH. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
What is Dr. Chismark's address?
Dr. Chismark is listed at 3 Alumni Dr Ste 201, Exeter, NH 03833. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chismark?
The number on file is (603) 775-7405. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Chismark?
Dr. Chismark's National Provider Identifier is 1679583389. 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 Dr. Chismark train?
Dr. Chismark attended Geisel School of Medicine at Dartmouth, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Chismark have?
Dr. Chismark has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chismark perform?
According to Medicare billing data, Dr. Chismark performs procedures including diagnostic exam of anus using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Chismark's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chismark. If this is you, claiming it is free.
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