Are you William S. Asch, M.D., PhD? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 20 York Street Cb 2041, Hospitalist Service, New Haven, CT 06510
About Dr. Asch
Based in New Haven, CT, William S. Asch, M.D., PhD is listed in the NPI registry under nephrology. William graduated from State University of New York at Stony Brook, School of Medicine in 2001. William is also listed as specializing in internal medicine. According to Medicare claims data, William cared for 316 Medicare patients across 560 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1003933326 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
- (203) 688-4748
- Email not available
Practice Locations
20 YORK STREET CB 2041 HOSPITALIST SERVICE
New Haven, CT 06510
Conditions Commonly Evaluated or Treated
Within Nephrology 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
Acid-base disorders
Anatomical conditions
Autoimmune conditions
Blood disorders
Blood pressure
Cysts and growths
Diabetes complications
Dialysis complications
Electrolyte disorders
Fluid retention
Genetic disorders
Hormone disorders
Infections
Inflammatory conditions
Kidney damage
Kidney failure
Kidney filter diseases
Lab abnormalities
Metabolic disorders
Multi-organ conditions
Structural kidney issues
Symptoms
Urine abnormalities
Urine symptoms
Vascular conditions
Vascular kidney issues
Procedures & services
Most searched procedures
Consultations
Diagnostic tests
Diagnostics
Dialysis
Dialysis access
- Dialysis Access Physical Exam
- Dialysis Catheter Removal
- Dialysis Fistula Repair
- Temporary Dialysis Line Placement
Diet and nutrition
Imaging
Infusions
Interventional procedures
Lab tests
- 24-hour urine test
- Comprehensive Metabolic Panel
- Kidney Function Blood Test
- Parathyroid hormone monitoring
- Urine protein check
- Urine sediment test
Medication management
- Active Vitamin D Therapy
- Resistant Blood Pressure Medication Adjustment
- Steroid Therapy For Kidney Inflammation
Medication therapy
- Acid reducer treatment for kidneys
- Phosphate binder therapy
- Potassium lowering treatment
- Red blood cell booster injections
- Water pill adjustment
Patient education
Prevention
Procedures
Specialized therapies
Supportive care
Surgical procedures
Transplant care
Vascular access
Procedures Most Often Billed to Medicare
560 services · 316 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Needle biopsy of kidney | Procedure | 50200 |
21 | As often as other peers in Nephrology |
| Ultrasonic guidance for needle placement | Imaging | 76942 |
21 | As often as other peers in Nephrology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
257 | As often as other peers in Nephrology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
119 | As often as other peers in Nephrology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
70 | As often as other peers in Nephrology |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
47 | As often as other peers in Nephrology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
25 | Less often than most peers in Nephrology |
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 kidney specialists at this location 2
Same specialty, same street address — most likely the same department or group.
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.
Other kidney specialists in New Haven 6
Same specialty, same city.
More connections — 17 related providers in 3 groups
Trained at State University of New York at Stony Brook, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at State University of New York at Stony Brook, School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Needle biopsy of kidney 1
Providers in CT who bill this service to Medicare most often.
Common questions
What is William S. Asch, M.D.'s specialty?
William S. Asch, M.D. is a kidney specialist in New Haven, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nephrology”.
NPI registry
Where can I find William S. Asch, M.D.?
William S. Asch, M.D. is listed at 20 York Street Cb 2041 Hospitalist Service, New Haven, CT 06510. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact William S. Asch, M.D.?
The number on file is (203) 688-4748. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William S. Asch, M.D.'s NPI number?
William S. Asch, M.D.'s National Provider Identifier is 1003933326. 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
What is William S. Asch, M.D.'s education?
William S. Asch, M.D. attended State University of New York at Stony Brook, School of Medicine, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How long has William S. Asch, M.D. been practicing?
William S. Asch, M.D. has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What is William S. Asch, M.D. known for?
According to Medicare billing data, William S. Asch, M.D. performs procedures including needle biopsy of kidney; reads or performs imaging such as ultrasonic guidance for needle placement, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William S. Asch, M.D. confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William S. Asch, M.D.. If this is you, claiming it is free.
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