Physician Profile
Unclaimed ProfileAbout ALLENDORF
Based in Mineola, NY, John Dennis Allendorf, M.D. is listed in the NPI registry under general surgery. John graduated from Columbia University College of Physicians and Surgeons in 1997. John is also listed as specializing in surgery and surgery of the hand. Medicare claims data shows John provided 315 services to 308 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (516) 663-3300
- Email not available
Practice Locations
120 MINEOLA BLVD SUITE 320
Mineola, NY 11501
Procedures Most Often Billed to Medicare
315 services · 308 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
44 |
| Removal or exploration of parathyroid glands | Procedure | 60500 |
29 |
| Removal of thyroid lobe on side of neck | Procedure | 60220 |
11 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
74 |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
64 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
40 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
19 |
| Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | Billing code | G0180 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
11 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
11 |
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.
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 general surgeons in Mineola 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
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 kind of doctor is Dr. Allendorf?
Dr. Allendorf is a general surgeon in Mineola, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GENERAL SURGERY”.
NPI registry
What is Dr. Allendorf's address?
Dr. Allendorf is listed at 120 MINEOLA BLVD SUITE 320, Mineola, NY 11501. 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. Allendorf?
The number on file is (516) 663-3300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Allendorf?
Dr. Allendorf's National Provider Identifier is 1740364397. 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. Allendorf train?
Dr. Allendorf attended Columbia University College of Physicians and Surgeons, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Allendorf have?
Dr. Allendorf has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Allendorf perform?
According to Medicare billing data, Dr. Allendorf performs procedures including insertion of needle into vein for collection of blood sample, removal or exploration of parathyroid glands and removal of thyroid lobe on side of neck, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Allendorf's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Allendorf. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.