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- 255 Smith Ave N, Suite 100, Saint Paul, MN 55102
About Dr. Katz
Based in Saint Paul, MN, Harold H. Katz, MD is listed in the NPI registry under endocrinology, diabetes & metabolism. Harold graduated from Mayo Medical School in 1986. Harold is also listed as specializing in internal medicine. Medicare claims data shows Harold provided 4,858 services to 2,036 patients. The services billed most often include injection, denosumab, 1 mg, insertion of needle into vein for collection of blood sample, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1447211859 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
- (651) 241-5000
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
255 SMITH AVE N SUITE 100
Saint Paul, MN 55102
Conditions Commonly Evaluated or Treated
Within Endocrinology, Diabetes and Metabolism 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
Adrenal disorders
Blood sugar disorders
Bone and calcium disorders
Bones
Pituitary
Pituitary disorders
Thyroid
Thyroid disorders
Most searched conditions
Adrenal
Diabetes
Endocrine tumors
Hormone disorders
- Early or delayed puberty
- Excess facial or body hair
- Gynecomastia
- Perimenopause
- Testosterone deficiency
Hormones
Metabolic disorders
Metabolism
Parathyroid
Procedures & services
Adrenal
Adrenal evaluations
Blood sugar management
Bone evaluations
Bone treatments
Diabetes
- Automated Insulin System Setup
- Blood Ketone Monitoring
- C-Peptide Test
- Continuous Glucose Monitor Data Review
- Starting Insulin Therapy
- Medical nutrition therapy
Diabetes education
Genetic evaluations
Hormone treatments
- Growth Hormone Injections
- Hormone Replacement Therapy Consultation
- Estrogen and Progesterone Therapy
Hormones
Metabolic evaluations
Metabolism
Parathyroid
Pituitary
Pituitary evaluations
Routine Blood Tests
Thyroid
- Thyroid Uptake and Scan
- Thyroid Cyst Alcohol Ablation
Thyroid procedures
- Thyroid Antibody Testing
- Thyroid Medication Adjustment
- Radioactive Iodine Treatment
- Thyroid Blood Test
- Thyroid Nodule Biopsy
- Thyroid Nodule Radiofrequency Ablation
Weight & Metabolism
Women's health
Most searched procedures
Diabetes preventive care
Procedures Most Often Billed to Medicare
4,858 services · 2,036 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
492 | More often than most peers in Endocrinology, Diabetes &… |
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
138 | More often than most peers in Endocrinology, Diabetes &… |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
45 | As often as other peers in Endocrinology, Diabetes &… |
| Injection, denosumab, 1 mg | Drug given | J0897 |
2,220 | As often as other peers in Endocrinology, Diabetes &… |
| Injection, zoledronic acid, 1 mg | Drug given | J3489 |
95 | As often as other peers in Endocrinology, Diabetes &… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
377 | More often than most peers in Endocrinology, Diabetes &… |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
217 | More often than most peers in Endocrinology, Diabetes &… |
| Hemoglobin a1c level | Lab test | 83036 |
183 | More often than most peers in Endocrinology, Diabetes &… |
| Blood test, basic group of blood chemicals (calcium, total) | Lab test | 80048 |
180 | More often than most peers in Endocrinology, Diabetes &… |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
140 | As often as other peers in Endocrinology, Diabetes &… |
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 endocrinologists at this location 4
Same specialty, same street address — most likely the same department or group.
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.
More connections — 26 related providers in 4 groups
Other endocrinologists in Saint Paul 5
Same specialty, same city.
Trained at Mayo Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at Mayo Medical School 7
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 6
Providers in MN who bill this service to Medicare most often.
Common questions
What is Dr. Katz's specialty?
Dr. Katz is an endocrinologist in Saint Paul, MN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Endocrinology, Diabetes & Metabolism”.
NPI registry
Where can I find Dr. Katz?
Dr. Katz is listed at 255 Smith Ave N Suite 100, Saint Paul, MN 55102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Katz?
The number on file is (651) 241-5000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Katz?
Dr. Katz's National Provider Identifier is 1447211859. 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 Dr. Katz's medical education?
Dr. Katz attended Mayo Medical School, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Katz have?
Dr. Katz has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Katz known for?
According to Medicare billing data, Dr. Katz performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin 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
Is Dr. Katz's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Katz. If this is you, claiming it is free.
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