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Edit this profileWhere to find William M. Klein, MD
- New Hyde Park location main office
1 Hollow Ln Ste 109, Suite 230, New Hyde Park, NY 11042 - Great Neck location
1000 Northern Blvd Ste 230, Great Neck, NY 11021
About Dr. Klein
Based in New Hyde Park, NY, William M. Klein, MD is listed in the NPI registry under general practice. William graduated from Icahn School of Medicine at Mount Sinai in 1994. William is also listed as specializing in internal medicine. According to Medicare claims data, William cared for 1,638 Medicare patients across 4,179 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, injection, methylprednisolone acetate, 1 mg, and insertion of needle into vein for collection of blood sample. NPI 1659359578 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
- (516) 627-4433
- Email not available
Practice Locations
1 HOLLOW LN STE 109 SUITE 230
New Hyde Park, NY 11042
1000 Northern Blvd Ste 230
Great Neck, NY 11021
Conditions Commonly Evaluated or Treated
Within General Practice 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
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Blood disorders
Bone health
Brain & Nerves
Digestive Health
- Acid reflux
- Constipation
- Viral gastroenteritis
Digestive health
- Food Poisoning
- Hemorrhoids
- IBS
Ear, Nose & Throat
Endocrine
Eye Care
Foot & Ankle
General Health
Heart & Circulation
Infections
Joint & Muscle
Lungs & Breathing
Men's Health
Mental Health
Pain
Pain & Joints
Skin
Skin & Hair
Sleep
Urinary & Kidney
Weight & Metabolism
Women's Health
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Dermatology
Diagnostic testing
- Diabetes Screening and A1C Test
- Heart monitor
- Spirometry
Ear, Nose & Throat
Exams & Clearances
- DOT Physical
- Pre-Op Clearance Exam
- Sports physical
Heart & Circulation
Hormone therapy
Infections & Screening
- Cholesterol Check
- COVID-19 testing
- STI Testing
- Urine Drug Screen
Injections
- Antibiotic Injection
Lab tests
- Rapid flu test
- Rapid Mono Test
- Rapid strep testing
- Urinalysis
- Vaccine Titer Test
Lungs & Breathing
Men's Health
- Prostate exam
Mental health
- Mental Health Evaluation
Minor Surgery
- Incision and drainage of an abscess
- Ingrown toenail removal
- Mole removal
- Skin Tag Removal
- Superficial foreign-body removal
- Wart Removal
Pain & Injections
Pain & Joints
- Splinting of minor injuries
Pain management
Physical exams
- Daycare Physical
Prescriptions & Medications
- Prescription Refill
Preventive care
Preventive Care
Sleep
- At-Home Sleep Study Ordering
Vaccines
- HPV vaccine
- Routine Vaccines
- Shingles And Senior Vaccinations
- Tetanus shot
- Travel vaccines
Weight & Metabolism
Women's Health
- Birth control counseling
- Depo Shot
- IUD Removal
- Pap smear
- Pelvic exam
- Pregnancy Confirmation Test
Wound Care
- Burn and Wound Care
- Minor laceration repair
- Suture removal
Procedures Most Often Billed to Medicare
4,179 services · 1,638 patients · 24 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
591 | More often than most peers in General Practice |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
235 | More than most peers in General Practice |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
166 | More often than most peers in General Practice |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
108 | More often than most peers in General Practice |
| Test to measure rate of airflow | Treatment | 94375 |
18 | Less often than most peers in General Practice |
| Administration of vaccine | Treatment | 90471 |
15 | As often as other peers in General Practice |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
13 | Less often than most peers in General Practice |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
11 | Less often than most peers in General Practice |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
680 | Less often than most peers in General Practice |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | Drug given | J3420 |
117 | More often than most peers in General Practice |
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 8
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.
Class of 1994 at Icahn School of Medicine at Mount Sinai 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NY who bill this service to Medicare most often.
Common questions
What does Dr. Klein specialize in?
Dr. Klein is a general practitioner in New Hyde Park, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Practice”.
NPI registry
Where is Dr. Klein located?
Dr. Klein is listed at 1 Hollow Ln Ste 109 Suite 230, New Hyde Park, NY 11042. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Klein's phone number?
The number on file is (516) 627-4433. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Klein's NPI number?
Dr. Klein's National Provider Identifier is 1659359578. 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. Klein go to medical school?
Dr. Klein attended Icahn School of Medicine at Mount Sinai, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Klein been practicing?
Dr. Klein has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Klein do most often?
According to Medicare billing data, Dr. Klein performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Klein confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Klein. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.