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Edit this profileAt a glance
- 511 Park Hill Dr, Fredericksburg, VA 22401
About Dr. Posthumus
Jonathon B. Posthumus, MD practices allergy/immunology in Fredericksburg, VA. Jonathon is also listed as specializing in allergy & immunology. Medicare claims data shows Jonathon provided 16,652 services to 820 patients. The services billed most often include injection, tezepelumab-ekko, 1 mg, injection, omalizumab, 5 mg, and test for allergy using allergenic extract. The provider's National Provider Identifier (NPI) is 1255536553.
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
- (540) 371-5660
- Email not available
Practice Locations
511 PARK HILL DR
Fredericksburg, VA 22401
Conditions Commonly Evaluated or Treated
Within Allergy and Immunology 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
Digestive
Drug allergies
Drug allergy
Emergency
Environmental
Eye
Food allergies
- Egg Allergy
- Milk Allergy
- Peanut Allergy
- Shellfish Allergy
- Soy Allergy
- Tree Nut Allergy
- Wheat Allergy
Immune conditions
Immunology
- Common Variable Immunodeficiency
- Frequent Infections
- Hereditary Angioedema
- Mast Cell Activation Syndrome
- Weak Immune System
Lung conditions
Respiratory
Sinus
Sinus conditions
Skin
Skin conditions
Procedures & services
Most searched procedures
Allergy treatments
- Allergy Drops
- Asthma Biologics
- Food Desensitization
- Peanut Allergy Pill Treatment
- Sublingual Dust Mite Treatment
- Under-The-Tongue Allergy Tablets
Diagnostic
- Asthma challenge test
- Drug Challenge Test
- Exercise Challenge Breathing Test
- Exhaled nitric oxide test
- Ice Cube Test for Cold Allergy
- Immune System Blood Test
- Nasal endoscopy
- Oral Food Challenge
- Peak Flow Test
- Penicillin Allergy Testing
- Spirometry
- Tryptase Blood Test
- Vaccine Challenge Test
- Vaccine Response Antibody Test
Infusion
Medication therapy
Medications
Preventive
Respiratory
Tests
- Allergy Blood Testing
- Allergy Skin Prick Test
- Blood Component Allergy Test
- Complement Blood Test
- Eosinophil Blood Count
- Intradermal Allergy Test
- Pulmonary function test
- Skin Test For Metal Allergy
- Total IgE Blood Test
Treatment
Procedures Most Often Billed to Medicare
16,652 services · 820 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
1,373 | As often as other peers in Allergy/Immunology |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
475 | Less often than most peers in Allergy/Immunology |
| Professional service for multiple injections of allergen | Treatment | 95117 |
458 | As often as other peers in Allergy/Immunology |
| Test for allergy using allergenic extract injected into skin | Treatment | 95024 |
333 | As often as other peers in Allergy/Immunology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
219 | More often than most peers in Allergy/Immunology |
| Administration and interpretation of patient-focused health risk assessment | Treatment | 96160 |
182 | More often than most peers in Allergy/Immunology |
| Professional service for single injection of allergen | Treatment | 95115 |
124 | Less often than most peers in Allergy/Immunology |
| Test to measure rate of airflow | Treatment | 94375 |
95 | More often than most peers in Allergy/Immunology |
| Test to measure expiratory airflow and volume changes before and after medication administration | Treatment | 94060 |
22 | As often as other peers in Allergy/Immunology |
| Injection, tezepelumab-ekko, 1 mg | Drug given | J2356 |
8,610 | Less often than most peers in Allergy/Immunology |
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 allergy/immunology specialists at this location 3
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 allergy/immunology specialists in Fredericksburg 2
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract 7
Providers in VA who bill this service to Medicare most often.
Common questions
What does Dr. Posthumus specialize in?
Dr. Posthumus is an allergy/immunology in Fredericksburg, VA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Posthumus located?
Dr. Posthumus is listed at 511 Park Hill Dr, Fredericksburg, VA 22401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Posthumus's phone number?
The number on file is (540) 371-5660. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Posthumus?
Dr. Posthumus's National Provider Identifier is 1255536553. 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. Posthumus go to medical school?
Dr. Posthumus attended Other, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Posthumus have?
Dr. Posthumus has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Posthumus do most often?
According to Medicare billing data, Dr. Posthumus provides treatments such as test for allergy using allergenic extract and professional service for preparation and provision of 1 or more antigens, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Posthumus's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Posthumus. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.